Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Shenzhen Pengjin Technology Co., Ltd.

Product Description: The testing method for the S500 Oil Absorption Tester is as follows:Sample Preparation: Uniformly treat the powder sample to be tested to ensure even particle distribution.Oil Addition: Use a specific titration device to slowly drip oil into the sample. Dibutyl phthalate (DBP) is commonly used, but the instrument also supports other liquids such as DOP, NMP, linseed oil, etc.Mixing: During the oil dripping process, two motor-driven rotating blades in the instrument simultaneously stir the sample to ensure thorough mixing of the oil and the sample.Endpoint Determination: The S500 Oil Absorption Tester offers three measurement methods to determine the test endpointDetails are as follows:trqmode× Manual Measurement: Select "trqmode (nm)". When the measured torque value reaches the set value, the measurement is automatically completed, and the torque absorption value at the endpoint is recorded. However, manual measurement is invalid in this method.peakmode× Manual Measurement: Select "peakmode (nm)". When stopped at any moment, the torque value at that point is measured. During the process of reaching the maximum torque absorption, the "peakmode○○(%)" absorption value can be calculated. Manual measurement is valid in this method.Data Recording and Calculation: The instrument automatically records the volume of oil consumed and calculates the oil absorption value based on the sample's mass. Measurement data and torque curves will be displayed and can be output via a printer or serial port, printed using the built-in printer, or transmitted to a computer via external communication for real-time inspection and analysis of the results. more>

Negotiable

Category: Others

Company: Wuhan Tuojiefeng Technology Co., Ltd.

Product Description: TopBeeAI: Produce SCI Papers in 4 Hours! The "Paper Emergency Room" for Clinicians Is Now LiveEndless on-call surgeries, with paper deadlines looming?Literature, data, reviewer comments—each consuming your precious clinical time!TopBeeAI Medical Intelligent Writing Platform, deeply trained on 38 million biomedical literature pieces, offers a three-step rapid writing method designed for doctors:Medical Record Data → Publication-Ready Charts: Upload Excel case files to automatically generate survival curves, forest plots + statistical descriptions (including *p*-value annotations);Intelligent Enhancement of Innovation Points: Describe surgical techniques/therapies (e.g., "spleen-preserving laparoscopic pancreatic resection"), and AI extracts clinical value highlights → compares with top-tier journal literature → outputs technical flowcharts;Generate Editor-Preferred Cover Letters: Match journal preferences to create cover letters with "clinical translation value" phrasing, reducing rejection rates by up to 70%.Three Techniques: Avoid the Pitfalls of General AIGeneral AI Pain PointsTopBeeAI SolutionsFake LiteratureAutomatically links to PubMed, inserting verifiable genuine literature (including DOI links)Terminology DistortionEmbedded 300,000 MeSH terminology entries (e.g., "tumor apoptosis rate" instead of "cancer cells died")Superficial LogicGenerates controversy point counterargument models (e.g., "PD-1 resistance mechanisms" with pros/cons arguments + 5 key supporting references)Dual Assurance of Ethics and Security: The Foundation for Worry-Free Career AdvancementData Anonymization Engine: Automatically obscures sensitive patient information like ID/age, complying with GDPR-HIPAA standards;AIGC Trace Purification: Proprietary academic restructuring technology ensures AI-generated traces < 5% (compared to >30% in general tools);Compliance Statement Templates: One-click insertion of COPE-approved AI usage declarations to avoid academic integrity risks.A Doctor’s Time Should Be for Lives, Not Paperwork!TopBeeAI does not engage in ghostwriting black boxes—only serves as your academic compliance guardian—Let innovation be seen by the world, and let compassion return to the clinic! more>

Negotiable

Category: Others

Company: Wuhan Tuojiefeng Technology Co., Ltd.

Product Description: In medical papers, materials are the foundation for refining the article's theme and the pillar for expressing it. The value of materials directly influences the significance of the theme. Therefore, the collection and accumulation of materials have always been highly valued by scientific and technological workers. Materials are divided into direct materials and indirect materials. First, methods for collecting materials. Currently, there are three main methods for collecting materials:First, the survey method. The characteristics of the survey method are: when gathering material for a predetermined research purpose, no intervention or artificial control is applied to the research (survey) subjects. The survey method is divided into the following four types:1. Cross-sectional survey. Also known as a prevalence survey, it investigates the occurrence or existence of a certain condition in a current population, providing a cross-sectional understanding of a subject. Cross-sectional surveys are divided into comprehensive surveys (census) or non-comprehensive surveys (including typical surveys and sampling surveys).2. Retrospective survey. As the name implies, it is conducted after an event has occurred, thus lacking prior design. It is often used to infer causes from outcomes, i.e., analyzing reasons through survey results.3. Prospective survey. Opposite to retrospective surveys, it requires careful prior design and then collects data after a period of observation. Prospective surveys have strong scientific rigor, good comparability of data, and greater scientific value of results. They are often applied to infer outcomes from causes, with subjects divided into groups or control groups.4. Follow-up survey. Depending on the research purpose, this type of survey can track subjects for several years, decades, or even longer. It is often used to assess the long-term efficacy of certain diseases.Second, the observation method. This method is an improvement and discovery based on the survey method, making the observation results more accurate and scientific. First, the selection of observation subjects should be typical; generally, the more typical the subjects, the more reliable and persuasive the observation results. Second, the observation method should be objective; the stronger the objectivity, the greater the scientific value of the observation results. Upholding the objectivity of the observation method requires a strong sense of responsibility and a strict scientific attitude.Third, the experimental method. This method involves understanding objective phenomena by altering or replicating research subjects under fully controlled artificial conditions. Experiments include in vitro tests, animal tests, human trials, and other methods. They are often used in basic research.Additionally, I’d like to share a more efficient method. Currently, AI-assisted tools have emerged, making it easier for everyone to collect materials using relevant tools. I’ll also share a reliable tool with you. TopBeeAI is an intelligent writing platform tailored for medical researchers, making paper output more time-saving and effortless. Whether it’s literature review during the topic selection phase or actual paper writing, TopBeeAI provides full-process support. Literature retrieval: Quickly locate core references from recent years based on the PubMed platform, automatically generating a review framework. Structured writing: Step-by-step guidance from abstract to discussion, generating SCI-standard content paragraphs with one click, following the IMRaD structure. Adapts to the content requirements of journals like Nature, Science, Cell, etc., eliminating worries about terminology deviations. AI handles the foundational work, allowing you to focus on innovative research. topbeeai.com more>

$7.5

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Dongguan Weiling Electronic Technology Co., Ltd.

Product Description: more>

$99999

Category: Metallurgy & Minerals/Ferrous Metal Minerals/Chromium Ore

Company: Henan Zhongji Industrial Technology Co., Ltd.

Product Description: Chromite is mostly black, accompanied by dark brown streaks and a metallic luster. It is the raw ore for extracting chromium metal. In China, it is abundantly distributed in regions such as Tibet, Inner Mongolia, Xinjiang, Qinghai, and Hebei. After beneficiation and processing, it can be applied in numerous fields including metallurgy, casting, refractory materials, national defense, chemical industry, and glass.Chromite crushers have a high selection rate in the beneficiation market, but prices vary significantly. So, what factors influence the price of the equipment?1. Steel Production: The production of chromite ore crushers requires a large amount of steel. The price of steel can determine the price of the equipment. Therefore, if steel prices rise, the price of chromite crushers will also increase accordingly.2. Production Technology: Each manufacturer has different production technologies, resulting in variations in the performance and efficiency of chromite ore crushers. Consequently, there can be significant differences in equipment prices.3. Equipment Quality: The higher the quality of the chromite ore crusher equipment, the lower the frequency of failures and the higher the output for users, making such equipment more expensive. Conversely, the lower the quality of chromite gravel crushing equipment, the cheaper its price will be.Features of Jaw Crushers:As primary crushing equipment, incorporating current developments and mining machinery technology, improvements have been made in motion parameters, structural methods, and adjustment methods to meet larger feeding requirements and enhance efficiency. The use of wedge blocks for adjusting the discharge port facilitates adjustment and maintenance, with a large crushing ratio and uniform product size. Additionally, key components are made of high manganese steel and high-quality alloy materials, ensuring the entire machine is durable and long-lasting. more>

$99999

Category: Metallurgy & Minerals/Ferrous Metal Minerals/Chromium Ore

Company: Henan Zhongji Industrial Technology Co., Ltd.

Product Description: Chromite is mostly black, accompanied by dark brown streaks and a metallic luster. It is the raw ore for extracting chromium metal. There are abundant resources distributed in regions such as Tibet, Inner Mongolia, Xinjiang, Qinghai, and Hebei in China. After beneficiation and processing, it can be applied in many fields such as metallurgy, casting, refractory materials, national defense, chemical industry, and glass.Chromite crushers have a high selection rate in the mineral processing market, but prices vary significantly. So, what factors affect the price of the equipment?1. Steel Production: The production of chromite ore crushers requires a large amount of steel. The price of steel can determine the price of the equipment. Therefore, if steel prices rise, the price of chromite crushers will also increase accordingly.2. Production Technology: Each manufacturer has different production technologies, so the performance and efficiency of chromite ore crushers vary, leading to significant differences in equipment prices.3. Equipment Quality: The higher the quality of the chromite ore crusher equipment, the lower the frequency of failures and the higher the output for users, making such equipment more expensive. Conversely, the lower the quality of chromite gravel crushing equipment, the cheaper the price will be.Features of Jaw Crusher:As a primary crushing equipment, incorporating current developments and mining machinery technology, improvements have been made in motion parameters, structural methods, and adjustment methods to meet larger feeding requirements and enhance efficiency. The use of wedge blocks to adjust the discharge port facilitates adjustment and maintenance, with a large crushing ratio and uniform product size. Additionally, key components are made of high manganese steel and high-quality alloy materials, ensuring the entire machine is durable and long-lasting. more>

$12

Category: Others

Company: Baoding Chili Mold Manufacturing Co., Ltd.

Product Description: Drain cover molds can be made from steel, PP, and composite materials, with steel plate and PP, as well as PP and ABS combinations being the most commonly used. So, how to choose the material? The selection of material is related to the mold size. Generally, smaller-sized molds can be made using PP. PP material is relatively soft and cannot withstand very high forces, but it has a very attractive appearance. If the customer has strict requirements for appearance, this type is suitable. The production of such molds is completed in one go, allowing for rapid molding and a short production cycle, making them suitable for use in many precast factories. Once the concrete drain cover mold production is completed and transported to the factory, production can begin. The raw materials used for general drain covers have relatively high strength due to their usage characteristics, so careful mixing is required. The mixed slurry is then slowly poured into the drain cover mold, followed by a series of vibration operations. Once the concrete has solidified, demolding can be carried out.Round holes and elongated holes are common styles in drain cover molds. Most molds are rectangular in shape, and when selecting a mold, attention must be paid to the environmental usage requirements. Nowadays, construction sites generally require drain covers to be produced with holes. If the existing mold does not have holes, consider creating a new mold or making a steel mold.Drain cover molds have standardized dimensions, neat edges, and strict size requirements. more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Shenzhen Best Control Technology Co., Ltd.

Product Description: Bester RS485/232 to 4G Network Communication BC-1123 more>

$300

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company:

Product Description: The main components of the drainage channel can be divided into three parts: the channel body, the floor drain, and the cover plate.1. Made of overall 304 food-grade stainless steel, other materials can be custom-made;2. Material thickness options include 1.5mm, 2.0mm, etc.;3. The drainage channel features an inverted V-shaped arc bottom with a built-in slope, making it easy to clean and preventing water retention;4. Installation includes reinforcement ribs and adjustable feet.Next, introducing our floor drain1. Made of overall 304 food-grade stainless steel, other materials can be custom-made;2. Drain body thickness options include 1.5mm, 2.0mm;3. Built-in water seal of 5.0mm, providing anti-odor and anti-insect functions;4. Equipped with a food-grade sealing gasket, easy-to-clean structure, and removable anti-odor core;5. Optional two-layer or three-layer filtration design, connectable to the drainage channel, customizable according to customer requirements;6. Surface treatment options include brushed, passivated, sandblasted, etc.Finally, introducing our cover plate1. Cover plate materials include food-grade 304 stainless steel and high-molecular PE, other materials can be custom-made;2. Material thickness can be customized according to customer requirements;3. The cover plate features built-in anti-slip function, excellent drainage performance, and superior load-bearing capacity.4. Optional surface treatments include brushed, sandblasted, passivated, etc. more>

$1000

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Zhejiang Chuanlong Electric Co., Ltd.

Product Description: The SG/SBK series three-phase dry-type isolation transformers are indoor air self-cooling type, suitable for AC circuits with 50Hz/60Hz frequency and voltage up to 1000V. They serve as control power sources, local lighting, and indicator power sources for various machine tools, mechanical equipment, and general electrical appliances, and can also be used as small power sources. The SG/SBK series three-phase dry-type transformers can be manufactured in open-type and protective-type designs. They feature low loss, low noise, excellent fire resistance, and environmental friendliness. The protective type is constructed with a steel plate casing, with the transformer housed inside. The casing has inlet and outlet holes for power line installation. Additionally, voltage indicator lights and current monitoring instruments can be installed as per customer requirements. For large capacities above 10kVA, cooling fans are added, and for capacities of 80kVA and above, alarms are included. Universal wheels can also be added for mobility.(Power): 100VA-2000KVA (Including voltage):10Kv, 8KV, 6KV, 5Kv, 1140v, 690v, 660, 600v, 480v, 460v, 415v, 440v, 420V, 400v, 380v, 360v, 315v, 220v, 208v, 200v, 127v, 110v, 100v, 48v, 36v, 24v, 12v, 6.3v, and other special voltages.For years, our company has used premium materials and advanced technology to professionally produce SD/SG (YSD) series single-phase and three-phase dry-type isolation transformers specifically for mechanical equipment, with capacities ranging from 1KVA to 2000KVA. Our products are developed with reference to similar products from Siemens and comply with VDE0550, IEC439, JB5555, and GB5226 international and national standards. The SG series three-phase dry-type isolation transformers not only provide voltage transformation in the power grid but also isolate the third harmonic from the grid to the equipment, protecting machines from overheating and extending the lifespan of insulating materials. They are particularly suitable for imported equipment (380V input → 220V output, 380V input → any voltage output, 220V input → any voltage output) with specifications ranging from 1KVA to 1000KVA. The SG and DG series dry-type isolation transformers are widely used in various three-phase power supply applications with AC 50–60Hz frequency and input/output voltages not exceeding 500V. They are also widely applicable in various power supply scenarios with AC 50Hz or 60Hz frequency and input/output voltages not exceeding 500V. The design and manufacturing of the products, including various input/output configurations, voltage levels, connection groups, tap positions, winding capacity distribution, secondary winding configurations, and whether a casing is required, are all meticulously tailored according to user requirements.II. Three-phase dry-type isolation transformers are key components of various power supplies and electrical equipment. A simple transformer is one without a shielding layer between the primary and secondary windings, with a turns ratio of 1:1, primarily used for electrical isolation between input and output to address grounding issues between the two. Sometimes referred to as insulation transformers, transformers not only change voltage but also electrically isolate the input and output windings from each other. The primary and secondary windings are shielded with copper foil to filter harmonics, prevent current waveform distortion from polluting the mains grid, and avoid the danger of simultaneously touching a live enclosure (or metal parts that may become live due to insulation damage) and the ground. Three-phase dry-type isolation transformers are widely used to suppress power interference and resolve mutual interference between equipment caused by ground loops. The input and output voltages of dry-type isolation transformers can be designed as required, with single-phase, three-phase, or multiple input and output options, and specifications such as delta and star configurations. The rated power can be up to 2000KVA. Dry-type isolation transformers consist of cylindrical windings and laminated iron cores. The iron core is made of new high-quality high-silicon steel sheets, fully stacked with斜接缝. Advanced imported winding machines and full vacuum pressure impregnation are used. The windings are wound using a脱胎整列 method, and the transformer undergoes分段浸漆. A stepwise baking process at 60°, 80°, 100°, 120°, and 140° is employed to ensure the insulation adheres to the coils, reducing operating noise, loss, and temperature rise, while increasing the transformer's service life. Premium new cold-rolled grain-oriented silicon steel sheets are used for stacking; H-class temperature-resistant 180° enameled wire is employed, with bare wire windings for an aesthetically pleasing appearance. Primary and secondary windings include ventilation ducts for fast heat dissipation. Galvanized brackets and special impregnation processes, including vacuum impregnation and oven drying, effectively reduce vibration and noise during operation, increase electrical strength, and incorporate new technologies such as high-temperature-resistant insulating materials, making the transformer energy-efficient and quiet. Energy-saving and low-noise coils are designed with ventilation slots to ensure smooth air flow, rapidly and effectively reducing coil temperature. more>

Negotiable

Category: Machinery & Equipment/Compression & Separation Equipment/Crushing & Grinding Equipment

Company: Changsha Xingkeyuan Instrument Technology Co., Ltd.

Product Description: Product IntroductionThe PT series garbage crusher is a versatile machine with powerful crushing capabilities, primarily used for crushing various soft and hard plastics, old clothing, household waste, and converting bulk, spherical, and strip-shaped plastic scraps into granules. It plays a crucial role in the testing of defective plastic products, waste materials, and scrap plastics, improving waste utilization. It is an ideal choice for laboratories in waste-to-energy plants.Technical ParametersModelPT-250PT-300PT-400PT-500Motor Power (kW)447.511Spindle Speed (r/min)570570570550Rotating Diameter (mm)200200300300Number of Moving Blades (pcs)3336Number of Fixed Blades (pcs)2222Blade MaterialHigh-Quality Alloy Steel (Forging Process)Feed Inlet Size (mm)310*170370*170500*205610*225Feed Inlet Height (mm)90093011201135Crushing Capacity (kg/h)150200300400Screen Mesh Diameter φΦ6Φ6Φ10Φ10Weight (kg)160185368470Overall Dimensions (mm)710*620*1050710*690*10701120*820*13001280*930*1330 more>

$2310

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Beijing Aimoke Gas Equipment Co., Ltd.

Product Description: The FISHER gas regulator model 627 includes the following variants: 627-576/627-476/627-464/627W/627W-5/627W-30Standard technical parameters: Inlet pressure is 16 KG, outlet pressure 5-20 PSI, flow rate for liquefied gas can reach 500 KG, and for natural gas 500! These are the normal parameters! Custom configurations are also available;The 627 series includes a variety of products! Some can be used for liquid liquefied gas, for example: FS627W; some come with a shut-off function! However, special 627 models are rarely kept in stock; more>

Negotiable

Category: Machinery & Equipment/Electric Heating Equipment/Medium Frequency Power Supplies

Company: Shaanxi Deli Energy Technology Co., Ltd.

Product Description: The promotion and use of semi-coke boilers have brought hope to manufacturers currently using coal-fired boilers. Our company, Shaanxi Weinan Fandel Boiler Factory, recognizing the significant demand in the environmental protection sector, leveraged the strong capabilities of our parent group and the unique technological R&D advantages of Fandel to tackle technical challenges. Addressing issues such as low volatile content in semi-coke, delayed ignition, and the presence of unburned carbon particles in the exhaust, we conducted in-depth research and continuous innovation based on existing chain grate boilers. We developed a complete set of semi-coke combustion technology, thoroughly resolving these issues, and successfully created a new environmentally friendly semi-coke boiler, along with dust removal equipment specifically designed for the characteristics of semi-coke boilers. Our company has successfully undertaken several projects for converting coal-fired boilers to semi-coke boilers, including the relocation and micro-emission transformation of a 10-ton boiler for Shaanxi Damei Chemical Technology Co., Ltd., the transformation of a 2-ton boiler for the Weinan Environmental Monitoring Station (in 2015, the Weinan Environmental Protection Bureau organized a visit for local users to observe the successfully transformed semi-coke boiler by Fandel at the station), and the 6-ton boiler transformation project for the Small and Medium Enterprises Entrepreneurship Base, among others. Semi-coke is characterized by its block-like structure, with a particle size generally above 3mm, and a light black color. Currently, there are two main types of semi-coke: traditionally produced semi-coke and mechanically produced semi-coke. Semi-coke fuel is an energy source that contains almost no sulfur, very little nitrogen, and has the advantage of low CO2 emissions. Among various utilization and conversion pathways for semi-coke, one of the simplest and most feasible methods for large-scale, efficient, and clean utilization is its direct use as a fuel. This approach requires minimal modifications to existing combustion equipment while delivering excellent combustion performance. Its promotion and application play a crucial role in advancing the development of environmentally friendly fuel energy technologies in China, protecting the environment, and improving ecological conditions. It not only reduces fuel costs but also decreases SO2 emissions, while addressing the challenges of waste disposal. It offers significant energy-saving and environmental benefits. To meet market demand, our company, Shaanxi Weinan Fandel Boiler Factory, has designed and developed chain grate steam boilers that utilize semi-coke fuel, as well as solutions for converting coal-fired boilers to semi-coke boilers. more>

Negotiable

Category: Others

Company: Xiamen Boce Business Service Co., Ltd.

Product Description: The significance of the NSF mark lies in: NSF's excellent reputation within the industrial sector and consumer groups; high recognition by legislative and governmental agencies in various countries; global acknowledgment of the NSF mark; and its role as a WHO collaborating center in areas such as water safety and treatment, food safety, and indoor environments. Authorized products bearing the NSF mark signify that the product has been verified in the following aspects:1. It can achieve the impurity removal capability as indicated in the product manual;2. The materials comprising the product do not add contaminating components to the water during the treatment process;3. It complies with design and manufacturing process requirements;4. The product is free from structural and functional defects;5. The certification standards shown in the product's advertising, sample materials, and labeling are true and accurate.The NSF certification system is of great importance to industry professionals, consumers, and manufacturing units. As a trusted, objective, and independent third-party monitoring organization recognized by both the public and government, NSF has tested and verified that certified products comply with specific standards. This indicates that products bearing this mark have undergone rigorous testing and provide assurance to consumers. All entities participating in the NSF certification system must undergo testing, retesting, and third-party inspection/audits. Manufacturing units must produce products in accordance with publicly available standards, which cover aspects such as product manufacturing standards, materials, design, and processes. Additionally, NSF mandates that if a company wishes to imprint the NSF mark on its products, it must adhere to the stringent requirements of NSF certification and authorization. These requirements include initial and periodic testing and evaluations, and may even involve unannounced inspections. If misuse of the mark is discovered, or if a product fails to comply with requirements, NSF may take actions such as seizing and impounding products and inventory, destroying non-compliant products, blacklisting entities, and implementing recalls, legal actions, public notifications, revocation of certification, or other severe measures. NSF represents the interests of all parties involved, regulating the behavior of industry professionals, consumers, and manufacturing units, while overseeing policy implementation and the authority of certification. more>

$4200

Category: Metallurgy & Minerals/Common Steel/Other Steel Products

Company:

Product Description: S355J2 is a European standard low-alloy high-strength structural steel with excellent low-temperature impact properties. "S" stands for structural steel, "355" indicates its minimum yield strength of 355 MPa, and "J2" signifies that the material has good impact toughness at low temperatures of -20°C.S355J2 Low-Temperature Impact PropertiesStandard: S355J2 complies with the European standard EN 10025-2:2004.Chemical Composition: Carbon (C) content not exceeding 0.22%, silicon (Si) content not exceeding 0.55%, manganese (Mn) content not exceeding 1.60%, phosphorus (P) content not exceeding 0.025%, sulfur (S) content not exceeding 0.025%.Yield Strength: Depending on plate thickness, the yield strength is ≥355 MPa for thicknesses below 16mm, ≥345 MPa for 16-40mm, ≥335 MPa for 40-63mm, and so on, decreasing as plate thickness increases.Tensile Strength: Typically between 450-680 MPa.Impact Absorbed Energy: At low temperatures of -20°C, the impact absorbed energy is ≥27J.Comparison with National Standard Low-Temperature Impact PropertiesIn Chinese national standards, the equivalent steels to S355J2 are Q345D or Q345E, with specific comparisons as follows:Q345D: Yield strength of 345 MPa, tensile strength of 470-630 MPa, elongation not less than 18%, and impact absorbed energy ≥27J at low temperatures of -20°C.Q345E: Yield strength of 345 MPa, tensile strength of 470-630 MPa, elongation not less than 17%, and impact absorbed energy ≥27J at low temperatures of -40°C.Comparative AnalysisCompared to Q345D, S355J2 has a slightly higher yield strength, while Q345D's impact test temperature is -20°C, and Q345E's impact test temperature is even lower at -40°C. This indicates that Q345E maintains good impact toughness at even lower temperatures.ApplicationsS355J2 is widely used in building structures, bridges, ships, vehicle structural components, and the manufacturing of various tools, cutting tools, molds, and measuring instruments. Q345D and Q345E are also widely used in similar fields, especially within China.SummaryS355J2, along with Q345D and Q345E from Chinese national standards, are all high-strength structural steels with excellent low-temperature impact properties. S355J2 has a slightly higher yield strength, while Q345E undergoes impact testing at even lower temperatures. These steels are selected based on specific engineering requirements and environmental conditions to ensure structural safety and reliability.S355J232mm            2200114506.434S355J232mm            2200114506.408S355J225mm            2200117005.06S355J225mm            2200115004.976S355J225mm            2200116005.016S355J225mm            2200117005.066S355J232mm            2200112006.32S355J232mm            2200111506.276S355J232mm            2200111006.244 more>

$电议

Category: Instruments & Meters/Instrument Power Supplies/Instrument Power Supplies

Company: Shandong Hangtai Aviation Complete Equipment Co., Ltd.

Product Description: The aviation high-power regulated DC power supply, utilizing IGBT and amorphous magnetic cores as its core components, is specifically developed for aviation communication equipment. This series of power supplies provides highly stable output voltage and current, suitable for use as starting power for various aircraft, aviation equipment, and as a simulated input power source for aviation materials. Due to its adoption of soft-switching technology and mature control circuitry, it exhibits excellent electronic characteristics such as high efficiency, high stability, and high reliability.Features: 1. New electronic components, new electromagnetic materials, new conversion technologies, new control theories, and new functionalities.2. High frequency, high efficiency, high power density, high power factor, and high reliability.3. High precision, low ripple. This DC power supply employs peak current control, ensuring fast response and high output voltage regulation accuracy.4. High efficiency. Wide-range soft-switching technology enables high efficiency and low noise; overall efficiency can reach up to 95%.5. Compact size and lightweight. The use of soft-switching conversion technology significantly reduces internal heat sinks, making the unit smaller, more reliable, lighter, and with higher power density compared to hard-switching regulated power supplies, meeting the special requirements of more equipment.6. Equipped with phase-loss protection, short-circuit protection, overload protection, overvoltage protection, overcurrent protection, independent temperature monitoring protection circuits, and special designs for high power supply reliability.7. High-precision output display of current and voltage, using high-precision four-and-a-half-digit LED digital meters or LCD touchscreen displays. more>

$120

Category: Others

Company: Henan Sicheng Grinding Technology Co., Ltd.

Product Description: Alternative to FUJIMI Imported FO Polishing Powder #1200       FO is an alumina-zirconia composite polishing powder, characterized by combining the self-sharpening and toughness of both alumina and zirconia. The addition of silica and zirconia results in a moderate hardness of the polishing powder, preventing surface damage to wafers or crystals. It is suitable for grinding and polishing semiconductor materials such as gallium arsenide, gallium phosphide, silicon wafers, as well as optical lenses and optical glass.Chemical Composition:ComponentGuaranteed ValueTypical ValueAl2O345-57%50.88%ZrO228-33%32.11%SiO211-20%15.35%TiO20.8-2.0%1.03%Fe2O3＜0.1%0.10%Physical Properties:ColorWhiteSpecific Gravity≥3.9g/cm³, Measured Value: 4.1-4.3g/cm³Mohs Hardness9.0Production Specifications:Grit SizeD0(Micron)D3(Micron)D50(Micron)D94(Micron)#240≤ 93.1≤ 71.841.5±3.2≥ 28.7#280≤ 81.4≤ 64.135.2±2.7≥ 22.8#320≤ 70.6≤ 56.328.8±2.5≥ 18.1#400≤ 64.3≤ 50.224.6±2.3≥ 15.5#500≤ 54.3≤ 43.320.4±1.7≥ 13.2#600≤ 46.3≤ 37.417.1±1.4≥ 11.0#700≤ 39.3≤ 31.514.5±1.2≥ 8.7#800≤ 33.3≤ 27.512.0±1.0≥ 7.0#1000≤ 21≤ 14.710.3±0.3≥ 7.0#1200≤ 18≤ 11.87.2±0.3≥ 4.2#1500≤ 14≤ 10.05.8±0.5≥ 3.5#2000≤ 13≤ 9.04.7±0.5≥ 2.6#3000≤ 10.0≤ 6.33.7±0.4≥ 1.7#4000≤ 8.5≤ 5.42.8±0.4≥ 极1.5#6000≤ 8.0≤ 5.02.0±0.4≥ 0.8Product Application Scope:1) Electronics Industry: Grinding and polishing of semiconductor single-crystal silicon wafers, piezoelectric quartz crystals, and compound semiconductors (gallium arsenide, indium phosphide).2) Glass Industry: Grinding and polishing of optical glass crystals. more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Beijing Huaqing Boya Technology Co., Ltd.

Product Description: Alkaline Copper ExtractantHQ54 (similar toLIX54 extractant)Alkaline copper extractantHQ54 shares the same active ingredient asLIX54, which isβ-diketone, with a purity greater than95%. It is commonly used for extracting copper from alkaline leach solutions, such as printed circuit board etching solutions, copper scrap, copper alloys, copper/lead dross, and ammonia leach solutions of certain copper sulfide concentrates. more>

$面议

Category: Machinery & Equipment/Electric Heating Equipment/Medium Frequency Power Supplies

Company: Hangzhou Shuli Biotechnology Co., Ltd.

Product Description: Feed filter cake in air atmosphere with 40% moisture,Stainless steel inner liner, diameter 80cm, 4 sections required with each section 4 metersBurn titanium oxide, calcination temperature 850 degreesBurn 3 tons per day, electric heating, bottom baffle detachableFeed filter cake in air atmosphere with 40% moisture,Stainless steel inner liner, diameter 80cm, 4 sections required with each section 4 metersBurn titanium oxide, calcination temperature 850 degreesBurn 3 tons per day, electric heating, bottom baffle detachableFeed filter cake in air atmosphere with 40% moisture,Stainless steel inner liner, diameter 80cm, 4 sections required with each section 4 metersBurn titanium oxide, calcination temperature 850 degreesBurn 3 tons per day, electric heating, bottom baffle detachable more>

$面议

Category: Hardware & Tools/Molds & Dies/Other Molds

Company: Dongguan Qishi Gangxin Crafts Factory

Product Description: Product FeaturesHigh Moisture Absorption: Under conditions of 25°C and 80% relative humidity, Ihaor anti-mold bags can absorb water vapor up to more than 200% of their own weight, with a moisture absorption capacity exceeding 250 grams, which is 10-20 times the absorption rate of ordinary silica gel.Anti-Mold and Antibacterial: Incorporated with unique anti-mold and antibacterial agents, they release antibacterial factors while absorbing moisture, effectively killing mold and bacteria, preventing mold growth, and protecting products from mold damage.Application AreasTextile and Apparel Industry: Used during the storage and transportation of various clothing and home textile products to prevent mold, discoloration, and deterioration.Footwear and Luggage Industry: Effectively prevents shoes, luggage, and other items from molding due to humidity during production, storage, and sales, protecting materials such as leather and fabric from mold erosion.Home Goods Industry: Can be placed in various corners of the home, such as wardrobes, shoe cabinets, bookcases, and kitchen cabinets, to prevent furniture, books, tableware, and other items from dampness and mold.Electronics and Electrical Appliances Industry: Protects electronic components and electrical equipment from moisture, preventing issues like short circuits in circuit boards and rusting of metal parts, thereby extending product lifespan.Food and Pharmaceutical Industry: Ensures that food and pharmaceuticals remain dry during storage, preventing mold growth and guaranteeing product quality and safety. more>