Negotiable

Category: Telecommunications/Two-Way Radios/Tour Guide & Interpretation Systems

Company: 合肥市徽马信息科技有限公司

Product Description: How are wireless tour guide systems applied in scenic spots? While touring scenic areas, have you often been troubled by these issues: the tour guide straining to explain, only for their voice to dissipate in the noisy crowd, leaving you catching only fragments; wanting to savor the stories behind the attractions, but struggling to concentrate due to the surrounding commotion. Nowadays, the emergence of wireless tour guide systems in scenic spots perfectly resolves these annoyances, offering visitors a brand-new touring experience.Traditional tour guide models have many limitations:· Group tourists must closely follow the tour guide, reducing free activity time· Frequently unable to hear explanations clearly in noisy environments· Difficulty in meeting the needs of multilingual touristsEagleMi wireless tour guide systems easily solve these:The EagleMi 008A wireless tour guide system utilizes digital noise reduction technology, ensuring stable signal transmission and wide coverage. In complex scenic environments, it can achieve ultra-long-distance transmission of up to 200 meters. Even when multiple teams are providing explanations simultaneously within the scenic area, there is no cross-frequency interference, ensuring every visitor can clearly hear their exclusive commentary without missing any exciting content.The EagleMi 008A wireless tour guide system also excels in sound quality. Equipped with a built-in noise reduction chip, it can effectively filter out 90% of environmental noise, delivering pure and clear commentary to visitors. Whether in a bustling scenic area or a complex museum exhibition hall, visitors can easily listen and immerse themselves in a sea of knowledge. When standing by a waterfall with roaring water sounds all around, or in a bustling ancient town filled with noisy chatter, the wireless tour guide system ensures the commentary is clearly transmitted to your ears.To meet diverse usage needs in different scenarios, wireless tour guide systems are typically equipped with multiple channels and group functions. This means multiple tour groups can operate simultaneously without signal interference:· In group teaching at educational institutions, teachers of different groups can choose different channels for instruction, allowing students to focus intently on their group's content;· In tourist attractions, multiple guides can provide lively explanations to visitors in different areas simultaneously, greatly enhancing the scenic area's reception capacity and improving the touring experience; in corporate meeting breakout discussions, groups can communicate freely without interference, significantly improving communication efficiency and quality.· At large exhibition sites, multiple booth presenters can use wireless tour guide systems simultaneously to explain to different visitors without cross-frequency issues.With stable signals, excellent sound quality, and convenient operation, EagleMi wireless tour guide systems provide visitors with an immersive touring experience and offer convenience for scenic area management. Whether in historical and cultural sites or natural scenic areas, wireless tour guide systems are powerful assistants in enhancing the quality of tours. more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Beijing Huaqing Boya Technology Co., Ltd.

Product Description: Copper extractantHQ984 (similar to LIX984)Copper extractant HQ984, a mixture of ketoxime and aldoxime. It can efficiently extract copper from high-concentration copper-containing solutions at lower pH, Cu/Ni, and Cu/Zn more>

$200

Category: Electronic Components & Supplies/Integrated Circuits/Other Integrated Circuits

Company: UIY Inc.

Product Description: Model Number: UIYCI2536A Frequency Range:4.0~8.0GHz Bandwidth:20% Insertion Loss: 0.3dB Isolation:23dB VSWR:1.2 Forward Power:300W Reverse Power:100W Connector Type: N Temperature: -20~+70℃ Dimension：25*36*18mm more>

$1

Category: Machinery & Equipment/Engineering & Construction Machinery/Other Engineering & Construction Machinery

Company: LISUN ELECTRONICS (SHANGHAI) CO.,LTD

Product Description: Product Description JL-X waterproof test machine is according to IEC60529:1989 +A1:1999 +A2:2013 Degrees of protection provided by enclosures(IP Code), IEC60598, IEC60335 and IEC 60034-5, GB/T-2423.2, GB4208, GB7000.1. The JL-X includes the following test grades: IPX1, IPX2, IPX3, IPX4, IPX5, IPX6, IPX7 and IPX8 (Refer to page 51 of IEC60529). It is widely used in the authentication test organization for the products such as electrical & electronic products, LED luminaires as well as in the relevant quality control department for the waterproof detection of the enclosures protection grades. The whole JL-X waterproof test system includes: • Drip Box (JL-12): The drip box is for IPX1 and IPX2 drip test. The drip box size is 800x800x45mm (LxWxH). The diameter of drip hole is 0.4mm. The distance between drip holes is 20mm. The sample can be over 150kg. • Swing Pipe Water Spray Test Equipment (JL-34): It is for IPX3 and IPX4 waterproof test. The semi-diameter of swing pipe is 1meter (Any other size is also available). The inside diameter of the swing pipe is 15mm. The sample rotating table diameter is 1000mm (Or other size according to the diameter of the swing pipe), and the height is adjustable. The rotation speed is 1~5rpm which controlled by PLC panel. • Waterproof Jet Test Device (JL-56): With water supply device size is 1000x1000x600mm, the nozzle diameter is ф6.3mm (IPX5 waterproof test ) and ф12.5mm (IPX6 waterproof test). The water speed is 12.5 ±0.626L/min for IPX55 and 100 ±5L/min for IPX6 • Immersion tank Waterproof test Device (JL-7): It is for IPX7 waterproof test. The water tank size is 1000x1000x1200mm (Other size can be designed according to your request). It can test samples up to 120kg.  • Immersion tank Waterproof test Device (JL-8): It is for IPX8 test. It can simulate a water depth of 0~50m. The water immersion tank diameter is 600mm and the height is 1200mm. The compressive stress is 10 atmospheres or design according to customer's request. more>

Negotiable

Category: Other Weft Knitted Fabrics

Company: Putian Jishengxin Shoes and Clothing Co., Ltd

Product Description: Single sided towel cloth: refers to a knitted fabric with a circular yarn loop standing on one side of the fabric. It is composed of a combination of a flat needle coil and a loop coil with a elongated settling arc. Single-sided towel cloth has a soft feel and good extensibility, elasticity, wrinkle resistance, warmth retention, and moisture absorption. It is commonly used to make long sleeved and short sleeved shirts, suitable for wearing in late spring, early summer, or early autumn seasons, and can also be used to sew pajamas more>

$12000

Category: Others

Company: Zhengzhou Aoyi Culture Technology Co., Ltd.

Product Description: Product ModelLH-ZJ-2PNumber of Games100Product Power1KWComputer Configuration1660, 8G, 2TProduct Net Weight260KGController Configuration2Product Load Capacity200KGNumber of Players2Product Dimensions1380*1500*1500mmOtherIncludes43-inch display*1 more>

$65

Category: Chemicals/Phenols/Hydroquinone

Company:

Product Description: Product Advantages: Aesthetic, durable, short construction period, the entire road surface can be formed in one go (cast-in-place tactile paving can be directly laid on the finished road surface, avoiding the hassle of secondary paving typically caused by traditional tactile paving bricks), significantly reducing road construction costs and material waste. Various colors and styles are available, offering flexible combinations.Product Description: Polymer cast-in-place diamond tactile paving is a continuous tactile paving system made from inorganic high-strength polymer materials combined with specialized molds, constructed on existing road surfaces through cast-in-place methods. It is divided into two types: guidance strips and guidance points. Standard widths include 300mm, 400mm, 500mm, and 600mm, with flexible customization available based on actual needs. It forms a permanent bond with asphalt concrete or cement concrete base layers, offering wear resistance, slip resistance, stain resistance, and synchronous expansion and contraction with asphalt pavement.II. Construction Process and Operating MethodsPolymer cast-in-place diamond tactile paving is a new tactile paving technology that can be constructed on-site on traditional black asphalt concrete and gray cement concrete road surfaces.2.1 Construction ProcessBase layer inspection - Base layer cleaning and treatment - Layout marking - Tape application - Base leveling and mortar spreading - Mold placement - Filling with diamond tactile paving mortar - Leveling and finishing - Curing to specified time - Surface cleaning - Application of sealant for surface sealing - Drying and curing - Acceptance inspection - Opening to traffic - Final acceptance.2.2 Construction Equipment and ToolsThe construction process for diamond tactile paving is relatively simple, requiring only the following equipment and tools: one mixer, one disperser, several tactile paving molds, one material transport vehicle, rolling rollers, specialized serrated rubber screeds and flat rubber screeds, one powerful blower, one generator, brooms, and other general equipment and tools.2.3 Construction PersonnelOne team leader and 5-6 construction workers per group.2.4 Construction Preparation4.1 Review drawings and layout markingCarefully review construction drawings and verify positions on-site one by one. If necessary, mark points and apply tape.4.2 Material inspectionPolymer cast-in-place diamond tactile paving is an on-site constructed ground system involving multiple processes and materials. Before construction, ensure material consistency and compatibility. Emulsion materials should show no significant skinning, clumping, or abnormalities; powder materials should be free of clumps. 2.4.3 Trial mixing and sample preparationDifferent base layers and environments can affect the curing time of polymer diamond tactile paving. Therefore, before formal construction, conduct on-site trials strictly following the mix ratio and methods set for batch operations. Proceed with batch operations only after ensuring no significant defects in curing.2.4.4 Base layer conditions and treatmentThe base layer should be solid and clean. Asphalt concrete surfaces should be free of bleeding, loose dust, delamination, or aggregate loss.For cement concrete surfaces with strength below C25, treat the surface by milling, scabbling, grinding, sandblasting, or roughening (for newly poured concrete) to expose aggregates over a large area. Additionally, apply 1-2 coats of PM-101 penetrating sealant for sealing treatment.Clean, dry asphalt surfaces in good functional condition require no sealing treatment. more>

$6

Category: Machinery & Equipment/Pipes & Fittings/PE Water Supply Pipes

Company: Dongguan Dinghao Plastic Technology Co., Ltd.

Product Description: New Sales of External Thread to Plastic Adapter Fittings in Changping Town   Dongguan PEEK Plastic Products Structural DiagramDongguan Dinghao Plastic Technology Co., Ltd. can customize various products according to customer needs, providing integrated services from product development, mold design and manufacturing, to raw material procurement. The company adopts a strict quality management system to ensure stable product quality, aesthetic appeal, and timely and efficient production. We sincerely seek win-win cooperation with domestic and international businesses for mutual development and shared success!Name: Plastic Conversion AdapterModel: MPT-00330Outer Diameter: 9.6±0.5mmInterface Outer Diameter: 22.5±0.5mmLength: 35.5±0.5mmMaterial: PPColor: WhiteWeight: 3.4gNote: The above data is for reference only,Please refer to the actual product,Customization available with provided drawings or samplesPolyetherimide foam is used as thermal insulation and soundproofing material in transportation machinery such as aircraft.PEI has excellent hydrolysis resistance, making it suitable for surgical instrument handles, trays, clamps, prosthetics, mirrors, and dental tools.In the food industry, it is used for product packaging and microwave oven trays.PEI combines excellent high-temperature mechanical properties and wear resistance, making it suitable for manufacturing valve components in water pipe diverter valves. Due to its high strength, flexibility, and heat resistance, PEI is an excellent coating and film-forming material, capable of forming coatings and films suitable for the electronics industry, and can be used to produce microporous membranes with pore sizes < 0.1μm and high permeability. It is also used as high-temperature adhesives and high-strength fibers. more>

$23800

Category: Instruments & Meters/Electronic Measuring Instruments/Spectrum Analyzers

Company: Shenzhen Yixin Electronic Technology Co., Ltd.

Product Description: Rohde & Schwarz FSV13 Spectrum Analyzer 9KHz to 13.6GHzRohde & Schwarz FSV13 Spectrum Analyzer/Signal Analyzer | 9KHz to 13.6GHzBrand: German Rohde & Schwarz | ROHDE & SCHWARZ | R&SR&S®FSV Signal and Spectrum AnalyzerMain Features· Frequency range up to 3.6 GHz / 7 GHz / 13.6GHz / 30GHz.· 40 MHz signal analysis bandwidth· Total level uncertainty of 0.4 dB within the 7 GHz band· Supports WCDMA / HSPA, LTE, WiMAX, WLAN, analog modulation analysis software· Compatible with R&S®NRP series power sensors, offering extensive power measurement capabilities· Easy field upgrade options· Phase noise of –106 dBc/Hz at 10 kHz frequency offset· +15 dBm third-order intercept point (TOI), displayed average noise level (DANL) equal to –155 dBm at 1 Hz bandwidth· Removable hard drive for data security· Intuitive operation with touchscreen and control panelProduct IntroductionThe R&S®FSV is a signal analyzer designed for RF system development, production, installation, and service, balancing performance and cost. It offers the industry's fastest speed and broadest application range.Product Features1) Not only meets current standards but also anticipates future standards· Fully digital backend ensures high measurement accuracy and excellent repeatability· Largest I/Q memory depth in its class, capable of recording long signal sequences· First in its class to adopt a 40 MHz signal analysis bandwidth; suitable for all WiMAX standards and WLAN 802.11n2) Low measurement cost and high throughput, enhancing production efficiency· Measurement speed five times faster than other signal analyzers· Customized production application test programs· Efficient remote operation3) Rich functionality and outstanding performance, ideal for laboratory use· Excellent RF performance in medium frequency range analyzers· Unmatched level measurement accuracy within 7 GHz· Power measurement capabilities for digital communication system analysis· Multiple marker and trace functions· ACP measurement: includes numerous predefined standards for easier setup4) Intuitive operation· Touchscreen operation· Hotkey design for easy access to all major functions· Unmatched ease of operation with R&S®FSV5) Easy transition to next-generation signal analysis products· Remote compatibility with R&S®FSP and R&S®FSU for smooth product transition· Functional compatibility with existing Rohde & Schwarz spectrum and signal analyzers, allowing users to quickly familiarize themselves with the product· Special modes compatible with R&S®FSP and R&S®FSU enable continued use of existing remote control programs6) Low lifecycle cost· Easy field upgrades with optional features· Easy system expansion to adapt to changing application requirements· Free firmware upgrades to keep the product up to date more>

Negotiable

Category: Electrical Equipment & Supplies/Electric Motors/Generators

Company: Shaanxi Deli Energy Technology Co., Ltd.

Product Description:       How to use the steam generator, follow the instruction manual. Below we analyze several points to pay attention to when using the steam generator:1. Before use, carefully read the steam generator manual to ensure correct equipment operation and maintenance.2. Before each operation, open the steam valve and blowdown valve until all water and impurities in the furnace chamber are discharged.3. Check the water tank to ensure there are no foreign objects, otherwise it may damage the water pump or jam the check valve.4. When the steam generator enters normal operation, the steam valve can be closed. The equipment will slowly build up pressure. When the pressure reaches the set value, heating automatically stops, and steam can be used normally.5. Perform pressurized blowdown at least once a day. After use, disconnect the power for 15 minutes and wait until the pressure drops to 0.05MPa before blowdown. Be cautious during blowdown to prevent injury.6. Avoid moisture and water ingress in areas such as the electrical control box and water pump motor to prevent burnout. The equipment should be regularly maintained and kept clean.      Additionally, the steam generator has very high requirements for water quality. Using inappropriate water quality can cause scaling, which thickens the inner wall and blocks pipes, not only wasting fuel but also potentially causing pipe burst accidents. This is why the steam generator needs to be used with water treatment.      In summary, these are the key points to note when using a steam generator. more>

$4800

Category: Others

Company:

Product Description: Both Q420B and Q420NB are steel grades defined by the Chinese national standard GB/T 1591-2018 "High Strength Low Alloy Structural Steels." Their main differences lie in the delivery condition and the possible rolling processes involved.Q420B:"B" indicates the quality grade of the material, typically associated with impact testing at -20°C.The delivery condition for Q420B is usually in the as-rolled state, meaning the steel is cooled directly after rolling without subsequent heat treatment processes.The hot rolling process helps achieve a fine grain structure, improving the material's strength and toughness.Hot-rolled Q420B may not undergo normalizing treatment, so the grain size may be coarser compared to that of normalized or thermomechanically controlled processed (TMCP) steel.Q420NB:"NB" indicates that the material is delivered in a normalized or normalized rolled condition. "N" stands for normalized, and "B" represents the quality grade, associated with impact testing at 20°C.Normalizing treatment involves heating the steel to a certain temperature, holding it, and then cooling it to improve the grain structure, enhancing plasticity and toughness.Q420NB may undergo a normalized rolling process, where normalizing is performed during rolling, helping refine the grain and improve the material's impact toughness.Comparison of Rolling Processes:Hot Rolling Process (Q420B):Steel is rolled at high temperatures and then cooled naturally or under controlled conditions to form the desired shape and dimensions.The hot rolling process improves production efficiency and reduces energy consumption.Hot-rolled materials have higher hardness and strength but may have slightly lower plasticity compared to normalized materials.Normalized Rolling Process (Q420NB):During rolling, the steel undergoes normalizing treatment to improve its mechanical properties and processability.Normalizing can reduce internal stresses generated during rolling and improve the material's uniformity.Normalized rolled materials typically exhibit better weldability and processability.In practical applications, the choice between Q420B and Q420NB depends on the requirements of the final product. If higher strength and hardness are needed, Q420B may be selected; if better toughness and weldability are required, Q420NB may be preferred. Additionally, normalizing treatment may increase production costs, so hot-rolled materials might be prioritized in cost-sensitive applications. During the design and manufacturing process, engineers need to select the appropriate material and process based on specific application needs and cost-effectiveness analysis.High-strength coil3.75mmQ420NB0.01500.0128.900High-strength coil3.75mmQ420NB0.01500.0128.710High-strength coil3.75mmQ420NB0.01500.0128.770High-strength coil3.75mmQ420NB0.01500.0128.780High-strength coil3.75mmQ420NB0.01500.0128.820High-strength coil3.75mmQ420NB0.01500.0128.550High-strength coil3.75mmQ420NB0.01500.0128.450High-strength coil3.75mmQ420NB0.01500.0127.530High-strength coil3.75mmQ420NB0.01500.0128.510High-strength coil3.75mmQ420NB0.01500.0128.120 more>

$48

Category: Construction & Building Materials/Thermal Insulation Materials/Rock Wool

Company: Nantong Xiangzhan New Building Materials Co., Ltd.

Product Description: Rock wool board is a type of rock wool insulation material primarily used for ductwork. It is made mainly from basalt as the raw material, which is melted at high temperatures and then transformed into artificial inorganic fibers using high-speed centrifugal equipment. Binders and dust-proof oil are added during the process, followed by heating and curing to produce rock wool insulation boards of various specifications and requirements. Rock wool can also be combined with glass wool or aluminum silicate wool to form composite rock wool insulation boards. Rock wool boards are primarily made from diabase and basalt slag, which are melted at high temperatures. During the high-speed centrifugal process, adhesives and waterproofing agents are sprayed to create resin rock wool insulation boards and waterproof rock wool insulation boards.Performance characteristics of rock wool board:Rock wool boards exhibit excellent thermal insulation, mechanical workability, and fire resistance. With a high acidity coefficient, they offer good stability and fiber durability, as well as effective sound absorption properties.Features of rock wool board:1. Rock wool boards are made primarily from basalt, which is melted at high temperatures to form artificial inorganic fibers. They are lightweight, have low thermal conductivity, good sound absorption, are non-combustible, and offer high stability.2. It is a new type of insulation, thermal barrier, and sound-absorbing material.3. Rock wool boards also provide waterproofing, thermal insulation, and cold insulation properties, maintaining stability even under prolonged damp conditions without deliquescence.Applications of rock wool board:1. Rock wool boards are widely used for insulating industrial boilers and equipment ductwork in sectors such as petroleum, chemical, metallurgy, shipping, and textiles. They are also used in the construction industry for partition walls, ceilings, and insulation of interior and exterior walls, as well as for insulating various types of cold and hot ducts, both concealed and exposed.2. Suitable for ductwork insulation and thermal barriers in industries such as power, petroleum, chemical, light industry, and metallurgy, they are particularly convenient for small-diameter duct construction. Waterproof rock wool boards offer additional features such as moisture resistance, temperature regulation, and hydrophobicity. more>

$22.21

Category: Others

Company: Dongguan Suyun Plastic Co., Ltd.

Product Description: PES Characteristics: Chemical Resistance: PES is resistant to oils such as gasoline, engine oil, lubricants, and cleaning agents like Freon. It has the best solvent crack resistance among amorphous resins. However, its resistance to polar solvents like acetone and chloroform is poor, so caution should be exercised during use. 1. Hydrolysis Resistance: It can withstand hot water or steam at 150–160°C and is resistant to acid and alkali erosion even at high temperatures.2. Temperature Dependence of Modulus: Its modulus remains almost unchanged from -100°C to 200°C, performing better than any other thermoplastic resin above 100°C.3. Creep Resistance: Within the temperature range of up to 180°C, it exhibits the best creep resistance among thermoplastic resins. Glass fiber-reinforced PES resin even surpasses some thermosetting resins.4. Dimensional Stability: It features a low linear expansion coefficient with minimal temperature dependence. Notably, 30% glass fiber-reinforced PES resin has a linear expansion coefficient of only 2.3×10⁻⁵/°C, maintaining a value similar to aluminum up to 200°C.5. Impact Resistance: It possesses impact resistance comparable to polycarbonate. Unreinforced resin can be riveted, but it is sensitive to sharp notches in PES products, so design considerations are necessary.6. Non-Toxicity: It meets hygiene standards, being approved by the U.S. FDA and complying with Japanese Ministry of Health, Labour and Welfare Announcements No. 434 and No. 178.7. Flame Retardancy: It is self-extinguishing and exhibits excellent flame retardancy without any additives, achieving a UL94 V-0 rating (0.46mm). more>

Negotiable

Category: Others

Company: Zhongshan Linuo Packaging Products Co., Ltd.

Product Description: In the beauty and skincare industry, face masks, as a popular skincare product, have their packaging quality and convenience directly impacting the consumer experience. In recent years, easy-tear film for face masks has gained increasing favor from brands and consumers due to its convenience and safety. As an experienced packaging solutions provider, Linuo Packaging's easy-tear film for face masks has become the top choice for many clients, thanks to its high-quality materials and excellent performance.The significant advantage of easy-tear film for face masks lies in its convenience. Traditional face mask packaging often requires strenuous tearing to open, sometimes even damaging the film and affecting the user experience. In contrast, Linuo Packaging's easy-tear film adopts an innovative design concept, featuring specially designed tear lines that allow consumers to open it smoothly with just a gentle pull. This user-friendly design not only enhances customer satisfaction but also reduces complaints caused by packaging issues, helping brands build a positive image.Furthermore, Linuo Packaging's easy-tear film for face masks excels in terms of sealing and moisture resistance. The high-quality materials we use effectively block air and moisture, extending the shelf life of the face masks. This is particularly important for face mask products, as proper sealing can prolong the product's validity period, ensuring users enjoy the best skincare experience when using them.As a source factory, Linuo Packaging consistently adheres to high standards of quality control, ensuring that every batch of easy-tear film meets international standards. Our professional team is dedicated to providing customized services, tailoring suitable packaging solutions based on the needs of different brands to help them stand out in the market.In summary, easy-tear film for face masks is a key choice for enhancing the user experience, and Linuo Packaging, with its exceptional product quality and professional service, has become a trusted choice for many brands. Whether you are an emerging brand or an established enterprise, choosing Linuo Packaging will allow you to experience the perfect combination of quality and convenience, helping your products succeed in the competition. more>

Negotiable

Category: Machinery & Equipment/Compression & Separation Equipment/Screw Compressors

Company: Shenzhen Jiujing Refrigeration Equipment Co., Ltd.

Product Description: Low Temperature Water ChillerUnit DescriptionA low-temperature water chiller designed for low-temperature conditions, composed of two or more independent refrigeration cycles, with a refrigeration temperature typically ranging from -5°C to -50°C. Due to the diversity of products, some production processes and equipment cannot meet actual working condition requirements using normal-temperature water for cooling. Only low-temperature circulating water can fulfill the practical production process requirements, necessitating the use of low-temperature water chillers.Refrigeration PrincipleThe compressor operates, converting low-temperature, low-pressure gaseous refrigerant into high-temperature, high-pressure gaseous refrigerant, which enters the condenser. Part of the heat from the refrigerant in the condenser is expelled by external cooling water or cooling fans. The refrigerant releases heat and liquefies into a high-temperature, high-pressure liquid, which then flows through a dryer filter for drying and filtration. It then passes through an expansion valve for throttling (a rapid cooling process) and pressure reduction, liquefying into a low-temperature, low-pressure liquid that enters the evaporator for heat exchange. The low-temperature, low-pressure liquid refrigerant absorbs heat from the surrounding medium (water, oil) in the evaporator. During the heat absorption process, the refrigerant temperature remains constant while its volume changes. After absorbing heat, the low-pressure hydraulic refrigerant vaporizes into a low-temperature, low-pressure gaseous refrigerant and enters the compressor. It is compressed into a high-temperature, high-pressure gas and enters the condenser, thus completing the entire refrigeration cycle.Two-Stage Refrigeration Cycle SystemThe two-stage refrigeration cycle is developed based on the single-stage refrigeration cycle, with the compression process divided into two stages. Refrigerant vapor from the evaporator enters the low-pressure stage cylinder and is compressed to an intermediate pressure. After intermediate cooling, it enters the high-pressure stage cylinder and is compressed to the condensation pressure before entering the condenser. Generally, when the evaporation temperature is between -25°C and -50°C, a two-stage compressor should be used for refrigeration. The refrigeration system consists of an evaporator, two-stage compressor, oil separator, condenser, intermediate cooler, ammonia receiver, ammonia liquid separator, throttle valve, and other auxiliary equipment, all connected by pipes to form a closed system. The intermediate cooler uses a small amount of liquid refrigerant to vaporize and absorb heat at intermediate pressure, cooling the superheated vapor discharged from the low-pressure stage, reducing the suction temperature of the high-pressure stage, and also cooling the high-pressure liquid refrigerant.Main Components of the Unit:Compressor: The core component of the entire refrigeration system and the power source for the refrigerant.Evaporator: A heat exchange component that relies on the evaporation of liquid refrigerant to absorb heat from the cooled medium.Condenser: Plays a role in the refrigeration process by dissipating heat output by the compressor and allowing the refrigerant to condense.Thermal Expansion Valve: Commonly known as a throttle valve in the refrigeration system.Liquid Receiver: Installed at the evaporator and compressor suction pipe to prevent liquid refrigerant from entering the compressor and causing liquid hammer, serving as a protective component.Refrigerant: R22, R404a, R407c, R134a, and R410a are used as refrigerants in the refrigeration system.To enhance the stability of the water chiller during use, the EU quality management system certification has been actively implemented in the production process, and product quality control is meticulously managed in supplier selection.Features1. Brand-name compressors are selected, with built-in protection, low noise, energy-saving, and durability.2. The electrical components use branded products such as "Schneider," "Siemens," and "LG," ensuring stable machine operation and long service life.3. Imported Italian and Taiwanese water pumps are used, featuring large flow, high efficiency, and durability.4. Equipped with imported digital temperature controllers, controlling water temperature with an accuracy of ±1°C and a set temperature range of 5–50°C.5. Custom non-standard equipment is available, controlling water temperature from -50 to 85±0.1°C, water flow from 1 to 1000L±0.03L, and pressure from 0.1 to 10±0.04Mpa.6. A fully stainless steel thick-walled tank-type evaporator is used, with built-in automatic water replenishment and other devices, low-water-level automatic protection, and an open design for easy and quick cleaning and maintenance.7. The unit has eight major protection functions: power phase sequence protection, leakage protection, compressor overload protection, coil overheating protection, high and low pressure protection, water shortage protection, chilled water flow protection, and anti-freeze protection.8. The condenser of the industrial water chiller is a sleeve type with internal threaded copper tubes, designed reasonably for excellent heat exchange performance. The air-cooled unit's cooling radiator consists of fins and rows of copper tubes, manufactured using secondary flanging fin mechanical expansion tube technology and advanced heat exchanger production lines to ensure product energy efficiency.7. Electrostatic spray-coated shell with European design, aesthetically pleasing and elegant. The exterior panels are designed for quick disassembly and assembly, facilitating use and maintenance.Unit PerformanceThe low-temperature water chiller uses multiple compressors in parallel, each with its own chilled water circuit. All compressors are controlled by a unified microcomputer control system, starting and shutting down one by one. Additionally, all Ninewells brand units are made with imported original parts, resulting in extremely low single-unit failure rates. Combined, these factors ensure stable performance and continuous operation during long-term work.Application Range of Industrial Water Chillers:Low-temperature water chillers are used in hardware processing, casting, chemical industry, electronics, papermaking, printing, leather, jewelry, glass products, aluminum products, vacuum coating, laser processing, cutting processing, scientific research, medical science, pharmaceuticals, electroplating oxidation, food processing, ultrasonic cleaning, plastic products, central air conditioning, constant-temperature bath pools, ice rinks, ink, agriculture, shipbuilding, construction, aquaculture, aerospace manufacturing, automotive manufacturing, and other industries.After-Sales Service1. All equipment from our company comes with a one-year warranty and lifelong maintenance. After the warranty period, another agreement can be signed.2. Response time is 72 hours for provinces outside the home province and 48 hours for within the province.3. All repair costs during the warranty period are borne by our company. After the warranty period, all repair costs are borne by the user (at cost).4. Equipment transportation is by road, with dedicated direct vehicles or logistics shipping selected based on equipment quantity or size.Product QualityFor any equipment purchased from our company, if any component is found to be second-hand or counterfeit after delivery, our company will compensate the user ten times the value. If the equipment is found to be undersized or of inferior quality after delivery, our company will unconditionally accept returns or exchanges, with all costs borne by us.Technical ParametersWater Refrigeration Machine Set Technical ParametersModelRefrigerating CapacityCompressorEvaporatorCondenserWater PumpShape DimensionNet Weightkcal/hkWkWhpLinchm³/hm³/hkWMPammkgJRW-01AL24942.90.751183∕4"0.610000.370.18680×420×810110JRW-02AL49885.81.52403∕4"1.220000.370.18830×520×1200118JRW-03AL74828.72.23453∕4"1.830000.370.21050×600×1300130JRW-05AL1247014.53.7557013.050000.750.21200×600×1430160JRW-06AL1496417.44.569013.660000.750.21260×650×1550220JRW-08AL1955223.23×281402"4.880000.750.21300×650×1600240JRW-10AL24940297.5101602"6100001.50.21480×700×1680310JRW-12AL2992834.84.5×2121702"7.2120001.50.181500×700×1730430JRW-15AL3741043.55.5×2152002"9150001.50.181600×750×1900480JRW-20AL49880587.5×2203002"12200002.20.181700×900×2100660JRW-25AL5985669.69×2253002.5"15250002.20.181900×1000×2100740JRW-30AL74820877.5×3304502.5"183000030.182200×1000×2100810JRW-35AL87290101.59×3364702.5"21360003.00.182000×1500×1800850JRW-40AL997601167.5×4406002.5"24400003.750.182200×1400×2200980JRW-45AL112230130.511×3456503"27450003.750.182300×1450×22001100JRW-50AL1247001457.5×5507003"30500003.750.182400×1500×23001200JRW-60AL1496401749×5608003"36600003.750.182500×1550×23501400JRW-70AL17458020352.5709004"427000040.182600×1600×24001410JRW-80AL1995202327.5×88010004"488000040.182700×1700×24501490JRW-90AL2244602617.5×99011004"549000040.182800×1700×25001550JRW-100AL2494002907510012004"6010000040.183000×1800×25001650 more>

$60

Category: Health & Medical/Pharmaceuticals & Raw Materials/Chemical APIs

Company: UIY Inc.

Product Description: 8 to 12GHz – Drop in Circulator   Design Features 1. Can be in Dual Junction or Multi-Junction for higher isolation. 2. High RF performance, ultra-competitive price. 3. Military, space and commercial applications. 4. Custom design available upon request. 5. Support one year standard warranty.   RF Characteristics Model Number : UIYDC815A8T12 Freq. Range(GHz): 8.0 to 12.0 Insertion Loss Max(dB): 0.5 Isolation Min(dB): 18 VSWR Max: 1.3 Forward Power(W): 30 Reverse Power(W): 30 Connector Type: TAB Temp.(°C) : -55 to +85 Colour：Sliver   Other Related Products： RF Isolators RF Circulators Attenuator/Termination RF Filters Power Divider/Splitter Duplexer/Triplexer TX RX Combiner/Splitter Hybrid Combiner Directional Coupler Waveguide to Coaxial Adapter   If you have any customized inquiries, please contact us promptly.   more>

Negotiable

Category: Chemicals/Chemical Pipes & Fittings/Chemical Piping & Fittings

Company: Yangzhong GAOKE Instrument and Electrical Co., Ltd.

Product Description: more>

Negotiable

Category: Others

Company: Hebei Wuxing Power Equipment Co., Ltd.

Product Description: Custom Flood Rescue Unmanned Helicopter Helicopter Parameters Comprehensive GuideCustom Flood Rescue Unmanned Helicopter Helicopter Parameters Comprehensive Guide High ReliabilityFearless of any environment, tempered by steelCapable of flight in extremely harsh environments, takeoff and landing in sand and dust, flight in muddy conditions, overload operation, and quick maintenance. Rigid environments have forged the reliable quality and随时 rescue capability of Hebei Five Star "Red Eagle" heavy-payload long-endurance unmanned helicopter.According to Needs·Custom ConfigurationCustom Mounted EquipmentCan be equipped with emergency equipment modules and rescue gear as neededSatellite communication equipment, window breaker, foam gun, warning light, self-organizing network equipment, detection equipment, four-light pod, integrated spotlight and loudspeaker, flame throwing equipment, weapon mount, lifting sling, casting equipment, airborne de-icer, lighting equipment, fire extinguishing bomb, airborne net gunHebei Five Star "Red Eagle" Forest Fire Reconnaissance and Extinguishing Unmanned HelicopterHebei Five Star "Red Eagle" unmanned helicopter series includes: emergency rescue unmanned helicopter, urban high-rise fire unmanned helicopter, flood control and disaster relief unmanned helicopter, water rescue unmanned helicopter, forest and grassland fire extinguishing unmanned helicopter, emergency communication unmanned helicopter, emergency command unmanned helicopter, fire rescue unmanned helicopter, power repair unmanned helicopter, disaster aerial reconnaissance unmanned helicopter, etc.Can be equipped with visible light, far-infrared, laser ranging three-light pod, dual-spectrum gimbal, walkie-talkie relay module, fire extinguishing bomb casting system, fire extinguishing bomb aiming device, emergency loudspeaker, and other airborne equipment, can effectively conduct fire scene, real-time fire extinguishing, on-site command, communication relay, fire scene tracking,According to different configurations, the drone can be widely used in: emergency search and rescue, emergency fire protection, urban high-rise building fire extinguishing, more>

$36

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 广州艾浩尔防霉抗菌科技有限公司

Product Description: Product FeaturesEfficient Mold Removal: Its active ingredients quickly eliminate common molds such as black mold and white mold.Safe Composition: The main components, like those in iHeir Mold Removal Gel, have strong oxidizing and bleaching effects, making them highly effective for mold removal. When used normally, they pose minimal harm to humans, but direct contact with skin and eyes should be avoided, and ensure good ventilation during use.Wide Range of Applications: Suitable for various surfaces in homes, offices, hotels, schools, and other settings, such as walls, ceilings, floors, furniture, kitchens, and bathrooms for mold removal.Usage InstructionsPreparation: Wear protective equipment such as gloves, masks, and goggles. Clean and dry mold-contaminated items and furniture, and ensure the environment is well-ventilated.Surface Cleaning: Use a cleaner or soapy water to clean the surface to be treated, removing dust and grease to ensure the iHeir Mold Remover can adhere effectively.Prepare the Mold Remover: Mix the mold remover with water according to the instructions on the bottle, typically at a ratio of 1:5 for most needs. Do not mix it with other cleaners to avoid chemical reactions.Application: Use a brush, sponge, or sprayer to evenly apply or spray the mixed mold remover on the mold-affected surface, ensuring complete coverage of the area.Wait for Action: Allow the mold remover to penetrate and kill the mold for 15-30 minutes as per the product instructions.Wipe or Rinse: Use a wet cloth or sponge to wipe the treated surface, thoroughly cleaning away residual mold and remover. For large areas, rinse with clean water to ensure no residue remains.Prevent Regrowth: After treating the mold, spray or apply a diluted solution of the mold remover to form a protective film, slowing down mold regrowth.Precautions1. Avoid direct contact with the mold remover to prevent skin exposure or ingestion. If contact occurs, rinse immediately with water and consult a doctor.2. Ensure good ventilation during use to avoid inhaling excessive vapors or gases.3. Store the mold remover out of reach of children to prevent misuse.3. Strictly follow the usage instructions on the bottle and mix in the correct proportions.4. If the product splashes into the eyes, rinse immediately with water and consult a doctor. more>

$4800

Category: Chemicals/Petrochemicals/Diesel

Company: 深圳市宝安区文乔阳贸易商行

Product Description:  柴油常温免酸碱脱色剂废油脱色变白黑油脱色变黄柴油常温免酸碱脱色剂：让您的柴油焕然一新在繁忙的柴油市场中，您是否曾遇到过柴油颜色暗淡、杂质过多的困扰？现在，我们有柴油常温免酸碱脱色剂，为您解决这一难题，让您的柴油焕然一新。产品优势：1. 不用添加酸碱，安全环保柴油常温免酸碱脱色剂，不用添加酸碱，降低了对设备的腐蚀和污染，同时也减少了废渣的产生，更加环保。2. 操作简便，节省成本使用柴油常温免酸碱脱色剂，不用复杂的工艺处理，操作简便，直接把脱色剂加到油品里面，搅拌，沉淀即可。同时，该产品能够提升柴油品质，长期使用可节省燃料成本。3. 脱色好，改善柴油性能柴油常温免酸碱脱色剂能够有效去除柴油中的颜色和杂质，改善柴油的燃烧性能，延长发动机使用寿命。4. 适用于各种柴油，广泛适用该产品适用于各种类型的柴油，无论是轻质柴油、重质柴油还是煤油改质柴油，均可使用。使用方法：1. 按照产品说明书的比例将柴油常温免酸碱脱色剂与柴油混合。2. 充分搅拌，确保柴油与脱色剂均匀混合。3. 静置一段时间，让杂质和颜色浮出表面。4.排掉杂质，即可得到颜色清亮的柴油。注意事项：1. 确保使用过程中的安全，避免皮肤和眼睛接触。2. 存放于阴凉干燥处，避免高温。购买方式：您可以通过拨打电话进行购买。我们还提供完善的咨询服务，为您解决使用过程中可能遇到的问题。让我们一起行动起来，使用柴油常温免酸碱脱色剂，让您的柴油焕然一新！如果您有任何疑问，可以电话联系我们，为您提供专业的解答。快来尝试我们的产品吧，让您的柴油焕发新的活力！  真诚期待和您合作！ more>