$15

Category: Machinery & Equipment/Fans & Ventilation Equipment/Compressors

Company: 烟台乐森机械设备有限公司

Product Description: Due to fluctuations in raw material prices, the specific models and prices may vary. For detailed quotations, please contact our sales staff. Thank you.In long tunnels, it functions like an invisible "vacuum cleaner." As the name suggests, coal mine ventilation duct fabric is used for air supply and ventilation. Its powerful negative pressure can thoroughly extract harmful gases such as dust from deep within and expel them cleanly. Suction determines distance, and distance determines safety. Our negative pressure ducts feature a streamlined design with a robust framework.This type of coated fabric positive and negative pressure duct is commonly used in coal mines, iron mines, tunnels, and factory buildings. Depending on the material, positive and negative pressure ducts can also be flame-retardant and anti-static, which is a highly popular feature. Supplied directly from the manufacturer, our coated fabric positive pressure ducts for mining are used for positive pressure ventilation in coal mines, tunnels, and underground local fan operations.Varieties of mining coated fabric negative pressure ducts: Based on the coated fabric material, ducts are categorized into rubber-coated positive pressure ducts, plastic-coated positive pressure ducts, and rubber-plastic composite coated positive pressure ducts.II. Performance Test Report for Mining Coated Fabric Negative Pressure DuctsDuct Diameter (mm)    Hundred-Meter Air Resistance (ns²/m⁸)300     ≤811.0     400     ≤196.0      450      ≤122.0   500     ≤54.0     600     ≤24.0      800     ≤6.0    1000     ≤2.0      Applications of Mining Ventilation Ducts:Uses: Suitable for positive pressure ventilation in local fan operations in various mining underground excavation sites and tunnel engineering projects. Technical Features: Compared to rubber ducts, they offer lower air resistance, longer lifespan, lighter weight, lower cost, and excellent flame retardancy.Mining ventilation ducts include positive pressure ducts, negative pressure ducts, skeleton ducts, exhaust ducts, and supply ducts. In short, Lesen Mining Ducts has everything you need. Would you like me to help you choose one? Whatever type of duct you need, feel free to reach out to me! more>

$1500

Category: Machinery & Equipment/Valves/Discharge Valves

Company: 河北乃信环保科技有限公司

Product Description: The segmented wheel air-lock ash discharge valve rotary feeder features an aesthetically pleasing and elegant design. The rigid impeller feeder consists of a rotating impeller with compartments, a body, and a new type cycloidal pinwheel reduction motor, among other components. It is compact in size, reliable in operation, and offers excellent sealing and wear resistance. The working principle of the rigid impeller feeder is as follows: when the impeller is driven by the transmission mechanism to rotate within the body, powdered or granular material falling from the upper separator (or hopper) enters the impeller compartments through the feed port and is conveyed to the discharge port for expulsion as the impeller rotates. Throughout the entire process, it enables continuous and quantitative feeding and discharging.The star-shaped discharger device is a primary equipment for ash discharge in dust removal systems, air supply, and feeding for other devices. The star-shaped discharger is suitable for both powdered and granular materials. It is widely used in environmental protection, metallurgy, chemical, grain, food, and other industrial sectors.The star-type discharger (also known as rigid wheel feeder, star-type feeder, airlock, rotary feeder, etc.) is extensively applied in building materials, metallurgy, chemical, power, and other sectors as an ash discharge device for the hoppers of various dust removal equipment. It relies on the gravitational force of the material and the forced action of the feeder's working mechanism to discharge material from the silo and continuously and uniformly feed it into the next device. It can also serve as a feeding and discharging device for various mills, dryers, silos, and other equipment, suitable for dry powdered and small granular materials. The segmented wheel air-lock ash discharge valve rotary feeder boasts an aesthetically pleasing and elegant design. more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 南京瑞尼克科技开发有限公司

Product Description: PFA volumetric flasks are also known as imported polytetrafluoroethylene volumetric flasks or Teflon volumetric flasks.Common specifications include 10ml, 25ml, 50ml, 100ml, 250ml, 500ml, and 1000ml.Product Features1. Resistant to strong acids and alkalis;2. Low dissolution and precipitation, ensuring no contamination of samples;3. High transparency for easy observation of volumetric samples;4. Strictly adhering to the one-thousandth weighing requirement, with clear electronic engraving and calibration lines. Due to inherent defects of plastic materials, which are susceptible to environmental factors such as air and temperature, customers must perform secondary calibration before use;5. Essential in ICP-MS analysis; primarily used in laboratories for trace and ultra-trace analysis, isotope analysis, etc.;6. As there are currently no national standards for the grade certification of plastic volumetric flasks like PFA in China, we temporarily refer to the calibration standards for glass volumetric flasks, as detailed below:Single calibration line volumetric flaskNominal total capacity (ml)25ml50ml100ml250ml500mlCapacity tolerance (ml)±0.03±0.05±0.10±0.15±0.25Grade B±0.06±0.10±0.20±0.30±0.50Calibration line width (mm)≤0.4≤0.5Through batch sampling and calibration by the Nanjing Institute of Metrology and Testing, the error values of our volumetric flasks meet the standards of glass volumetric flasks. For specific certification and calibration values, please refer to the data issued by the Nanjing Institute of Metrology and Testing.7. Application fields: Widely used in trace analysis, isotope analysis, and other experiments such as ICP-MS and ICP-OES; analytical laboratories in various industries including environmental testing centers, new materials, new energy, polysilicon, semiconductors, etc. more>

$面谈

Category: Chemicals/Carboxylic Acids/Salicylic Acid

Company: 陕西圣瑞医药科技有限公司

Product Description: Pharmaceutical Grade Salicylic Acid Disinfectant and Antiseptic Active Pharmaceutical Ingredient, Medical Grade Salicylic Acid CP Version Pharmacopoeia Quality Standard with Content Above 99%Salicylic acid, with the chemical formula C7H6O3, also known as o-hydroxybenzoic acid, is an important organic acid. In the pharmaceutical field, salicylic acid serves as a pharmaceutical-grade active pharmaceutical ingredient with broad application value. Its CP version (Chinese Pharmacopoeia 2020 Edition) quality standard ensures high product quality and safety.The quality standards for salicylic acid as an active pharmaceutical ingredient in the CP version of the pharmacopoeia are very stringent. Firstly, its content must meet the specified standard, meaning it must contain no less than 99.5% of C7H6O3. This high purity requirement ensures the stability and effectiveness of salicylic acid in the pharmaceutical manufacturing process. Secondly, in terms of characteristics, salicylic acid should appear as fine white needle-like crystals or white crystalline powder, odorless or almost odorless, with an acidic reaction in aqueous solution. Additionally, its solubility must comply with regulations, being readily soluble in ethanol, soluble in boiling water, and slightly soluble in water.In terms of quality control, the CP version of the pharmacopoeia provides detailed regulations for the identification, testing, and assay of salicylic acid. For identification, specific chemical reactions can be used, such as the development of a violet color when an aqueous solution of salicylic acid is treated with ferric chloride test solution for preliminary judgment. For testing, high-performance liquid chromatography is employed to determine related substances in salicylic acid, ensuring that impurity levels remain within acceptable limits. For assay, precise titration methods are used to determine the exact content of salicylic acid.Pharmaceutical Grade Salicylic Acid Disinfectant and Antiseptic Active Pharmaceutical Ingredient, Medical Grade Salicylic Acid CP Version Pharmacopoeia Quality Standard with Content Above 99%Medicinal Efficacy of Medical Salicylic AcidSalicylic acid is a common medicinal ingredient widely used to treat skin diseases, particularly acne, warts, and keratosis. It possesses strong keratolytic and anti-inflammatory effects, making it widely applicable in skin care and treatment.1. Keratolysis (Exfoliation)One of the most well-known effects of salicylic acid is its ability to remove dead skin cells from the surface, promote natural skin metabolism, and help clear clogged pores. By softening and peeling away dead skin, salicylic acid effectively prevents and treats common skin issues such as pimples, blackheads, and whiteheads.- Treating Acne: Salicylic acid clears clogged pores of oil and dirt through exfoliation, reduces inflammation, and helps alleviate acne symptoms.- Treating Keratotic Skin Diseases: For skin conditions with abnormal keratinization, such as keratosis pilaris (chicken skin), salicylic acid softens the keratin, helping to improve the skin's appearance.2. Softening and Removing WartsSalicylic acid is a common treatment for common warts and plantar warts. It helps dissolve the epidermal layer, gradually causing the warts to fall off, especially for stubborn cases.- Treating Common Warts: Salicylic acid helps gradually remove the keratin layer of warts by softening and breaking down the wart tissue, achieving therapeutic effects.- Treating Plantar Warts: Salicylic acid is often applied in patch or topical form to the affected area, gradually removing the overgrown skin.3. Anti-inflammatory EffectsSalicylic acid has certain anti-inflammatory properties that can alleviate symptoms such as redness, swelling, and heat caused by inflammation.- Reducing Acne Inflammation: Salicylic acid decreases inflammatory responses caused by clogged pores, helping to control redness and swelling associated with acne.- Treating Skin Inflammation: It is also commonly used to relieve symptoms caused by other skin inflammations, such as mild skin allergies or contact dermatitis.4. Treating Keratosis DisordersSalicylic acid effectively removes abnormally overgrown keratin layers, making it suitable for keratosis, scaly skin diseases, and skin aging.- Treating Seborrheic Keratosis: Salicylic acid helps soften and remove overgrown keratin layers, improving skin texture.- Treating Psoriasis: Salicylic acid is sometimes used in the topical treatment of psoriasis to help remove thick scales and alleviate symptoms.5. Promoting Skin HealingSalicylic acid stimulates skin regeneration and repair, promoting wound healing. By removing dead skin cells, it aids the growth of new skin tissue, thereby accelerating the healing process.- For Minor Wounds or Cuts: Salicylic acid helps wounds heal faster by removing local dead skin.- Promoting Acne Scar Repair: After acne healing, salicylic acid helps remove dead skin from scars, reducing their appearance.6. Other Uses- Treating Lipomas: In some cases, salicylic acid may be used to alleviate symptoms of skin lipomas, although this is not its primary treatment area.- Treating Underarm Odor: Salicylic acid is occasionally used to treat underarm odor by cleansing pores. more>

Negotiable

Category: Others

Company: 日照海旭医疗器械有限公司

Product Description: Rizhao Haixu Medical Equipment Co., Ltd.  15165037451• Basic Information: The company is highly renowned in the patch production industry, with a professional R&D team and production workforce. Its products cover various types of patches.• Product Advantages: The production of children's cough and pneumonia patches strictly adheres to national standards, ensuring stable product quality. The company emphasizes product development and innovation, continuously introducing new products and formulas to meet market demands. The children's patches produced by the company are categorized according to ailments, including cough and pneumonia patches, indigestion patches, diarrhea patches, cold patches, throat and tonsil patches, constipation patches, mesenteric lymphadenitis patches, and more. Both agency and OEM services are available. The products have been successfully listed in centralized procurement programs across the country and can be ordered online for distribution. Distributors with established channels are welcome to inquire for detailed information. We look forward to collaborating with you. more>

$50

Category: Metallurgy & Minerals/Non-Ferrous Alloys/Other Non-Ferrous Alloys

Company: 深圳市宝安区松岗开创铜铝材料厂

Product Description: Brass bars have high strength, good plasticity, are suitable for cold and hot processing, possess good weldability and corrosion resistance, and exhibit excellent mechanical properties. They have good plasticity in the hot state, good machinability, weldability, and corrosion resistance. Brass composed of copper and zinc is called ordinary brass, while brass composed of more than two elements is called special brass. Depending on the proportion of elements and copper, their properties vary. Additionally, brass bars can be manufactured in different specifications according to actual needs.Brass bars have high strength, good plasticity, are suitable for cold and hot processing, possess good weldability and corrosion resistance, and are used for condenser and heat dissipation pipes, serpentine pipes, siphon pipes, and cooling equipment components. They exhibit excellent mechanical properties, good plasticity in the hot state, good machinability, weldability, and corrosion resistance. They are used for various deep-drawn and bent load-bearing parts such as pins, nuts, pressure gauge springs, heat dissipation components, and ring-shaped parts. Lead brass plate is a widely used type of brass with good mechanical properties and excellent machinability. It can withstand cold and hot pressure processing and is used for various structural parts in machining and stamping, such as gaskets and bushings. Tin brass plate has high corrosion resistance, good mechanical properties, and good pressure processability in both cold and hot states. It is used for corrosion-resistant parts on ships and components and pipes in contact with media such as steam and oil. Brass bars have good mechanical properties, low electrical and thermal conductivity, good corrosion resistance, and a tendency for stress corrosion cracking. They are used for important corrosion-resistant parts and components in the weak current industry.H90 high-precision brass bar characteristics and application range: Higher strength than copper (though it is the lowest among ordinary brass), good electrical and thermal conductivity, high corrosion resistance in atmospheric and freshwater environments, and good plasticity. It is easy to process with cold and hot pressure, easy to weld, forge, and tin-plate, with no tendency for stress corrosion cracking. Hot working temperature: 850–950°C; annealing temperature: 650–720°C; low-temperature annealing temperature for stress relief: 200°C. more>

$电议

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 深圳市乾思迪电子科技有限公司 

Product Description: 5.6"T-EF056K06400480ALIA146.0*107.0112.9*84.7640RGB*480TTL/RS232/USB, Horizontal and vertical display5.6"T-EF056K06400480BLIA128.3*119.3112.9*84.67640RGB*480TTL/RS232/USB, Standard screen, Horizontal and vertical display6.2"T-EF062K08000480ALIA175.0*94.0139.5*79.3800RGB*480TTL/RS232/USB, Horizontal and vertical display7.0"T-EF070K08000480ALI185.0*105.0154.08*85.92800RGB*480TTL/RS232/USB/CAN/Ethernet, Horizontal and vertical display7.0"T-EF070K10240600ALIA185.0*105.0154.08*85.921024RGB*600TTL/RS232/USB/CAN/Ethernet, Horizontal and vertical display8.0"T-EF080K08000480ALIA215.0*124.0180.1*103.4800RGB*480TTL/RS232/USB, Horizontal and vertical display8.0"T-EF080K08000600ALIA200.0*150.0162.0*121.5800RGB*600TTL/RS232/USB, Horizontal and vertical display8.0"T-EF080K10240768ALIA200.0*150.0162.0*121.51024RGB*768TTL/RS232/USB, Horizontal and vertical display9.0"T-EF090K08000480ALIA232.0*134.0200.5*114.2800RGB*480TTL/RS232/USB, Horizontal and vertical display10.1"T-EF101K10240600ALIA254.0*160.0222.7*125.31024RGB*600TTL/RS232/USB/CAN/Ethernet, Horizontal and vertical display10.1"T-EF101K13650768ALIA254.0*160.0222.7*125.31365RGB*768TTL/RS232/USB/CAN/Ethernet, Horizontal and vertical display10.4"T-EF104K08000600ALIA248.0*183.0211.2*158.4800RGB*600TTL/RS232/USB, Horizontal and vertical display12.1"T-EF121K12800800ALIA275.8*178.1261.1*163.21280RGB*800TTL/RS232/USB, Horizontal and vertical display12.1"T-EF121K13650768ALIA279.0*167.2268.0*150.71365RGB*768TTL/RS232/USB, Horizontal and vertical display15.0"T-EF150K10240768ALIA326.5*253.5303.8*228.11024RGB*768TTL/RS232/USB, Horizontal and vertical display15.6"T-EF156K13650768ALIA363.8*215.9344.2*193.61365RGB*768TTL/RS232/USB, Horizontal and vertical display18.5"T-EF185K13650768ALIA430.3*254.6409.8*230.41365RGB*768TTL/RS232/USB, Horizontal and vertical display more>

$68500

Category: Health & Medical/Medical Devices/Laboratory Testing Equipment

Company: 泰州市高港区迪新医用设备有限公司

Product Description: Working Principle:This machine adopts full computer control to perform flushing, enzymatic washing, cleaning, and 2% glutaraldehyde disinfection and rinsing for endoscopes. Each process uses circulating flow immersion, which can kill various microorganisms including bacterial spores.Scope of Application:Suitable for high-level cleaning and disinfection of various types of flexible endoscopes: gastroscopes, duodenoscopes, colonoscopes, bronchoscopes, ENT endoscopes, choledochoscopes, etc. The entire endoscope must be immersed for processing.Performance Features:1. The entire process includes fault alarm functions: insufficient disinfectant alarm, insufficient enzymatic cleaner alarm, insufficient alcohol alarm, filter too dirty or water pressure too low alarm, endoscope leakage alarm, drainage blockage alarm, and disinfectant tank water level too low alarm.2. The entire process is automatically and continuously monitored. In case of leakage, an alarm is triggered promptly, and automatic drainage is activated to better protect the endoscope.3. Automatically records the usage count of the disinfectant and displays it textually on the screen.4. Can disinfect endoscopes of various brands.5. Three-channel disinfection.6. Enzymatic washing function: Automatically adds enzymatic cleaner according to the proportions required by different brands.7. Alcohol function: Automatically sprays alcohol and gradually forms a process where alcohol is sprayed in measured amounts followed by automatic drying.8. LCD display with separate operation interface and adjustment section, making operation simple and flexible.9. Disinfection time can be adjusted according to requirements.10. Full immersion process follows the Ministry of Health's five-tank (or five-step) method, ensuring disinfection standards are met. Can use 2% glutaraldehyde or ortho-phthalaldehyde as disinfectants.11. The number of reusable cycles far exceeds that of similar products, thereby reducing usage costs.12. Foot-controlled electric switch: Prevents secondary contamination caused by manually opening the lid and then handling the disinfected endoscope. more>

$89

Category: Chemicals/Plastics & Products/Plastic Additives

Company: 广州艾浩尔防霉抗菌科技有限公司

Product Description: Product FeaturesEfficient sterilization and mold prevention: Utilizes cationic and nanotechnology to deeply sterilize and prevent mold, effectively inhibiting the growth and reproduction of mold. Even moldy wine boxes treated with this mold inhibitor are less likely to become moldy again.Safe and eco-friendly:Colorless, odorless, non-toxic, and free from harmful substances such as DMF, formaldehyde, and heavy metals. It is friendly to both humans and the environment, and does not cause corrosion, discoloration, or affect the texture of wine box materials.Stable performance:As a non-releasing treatment agent, it does not seep, migrate, or get consumed by microorganisms. It employs a unique mechanical sterilization method, ensuring high efficiency and long-lasting effectiveness. It is suitable for a wide pH range, from 4 to 10.Mold Prevention PrincipleThis mold inhibitor forms an antibacterial layer on the surface of wine boxes through spraying. When it encounters mold, it actively eliminates it, ensuring that the wine box remains mold-resistant even in humid environments.Usage MethodIt can be applied using methods such as a brush, a common hand-press spray bottle, an air-pressure spray gun, or a specialized mold inhibitor spray. No high-temperature baking is required during use; it naturally air-dries at room temperature in about 5 minutes.PrecautionsTo avoid sensitivity reactions from contact with sensitive skin, it is recommended to wear rubber gloves, a mask, and protective goggles during application. more>

$14500

Category: Hardware & Tools/Fasteners & Connectors/Other Fasteners & Connectors

Company: 江门市油美嘉液压科技有限公司

Product Description: How to Handle Oil Leakage in Sheet Metal Riveting Machines Professional Rivet Machine ProductionCauses: Aging or破裂 of oil/gas pipes; aging, damage, or loose connection seals; damaged seals in hydraulic valves, oil cylinders, or air cylinders; poor tank sealing.How to Handle Oil Leakage in Sheet Metal Riveting Machines Professional Rivet Machine ProductionSolutions: Regularly inspect pipes and connections, promptly replace aged or damaged parts; tighten connections; replace damaged seals. more>

$3000

Category: Others

Company: 深圳扎力普科技有限公司

Product Description: more>

$1000

Category: Others

Company: 深圳扎力普科技有限公司

Product Description: more>

$2000

Category: Others

Company: 深圳扎力普科技有限公司

Product Description: more>

$66

Category: Chemicals/Water Treatment Agents/Other Water Treatment Agents

Company: 中大恒建北京新材料科技有限公司

Product Description: Polymer cement grout is a cement-based grouting material primarily composed of high-strength cement, polycarboxylate superplasticizers, and multi-mineral materials as the main modifying components. It features good fluidity, micro-expansion, certain toughness, strong bonding strength with concrete, and corrosion resistance and durability. It is suitable for grouting repair of concrete structure cracks with widths greater than 3mm and for external steel reinforcement.II. Performance IndicatorsTable 1 Performance Indicators of Polymer Cement GroutNo.Test ItemPerformance Indicator1Vertical Expansion Rate (%)3h≥0.10Difference between 4h and 3h≥0.0202Fluidity (mm)Initial Value≥38030min Retention Value (%)≥903Compressive Strength (MPa)3d≥257d≥3528d≥554Flexural Strength (MPa)7d≥528d≥85Splitting Tensile Strength (MPa)7d≥328d≥46Bleeding Rate (%)07Normal Bond Strength with Concrete (MPa)28d≥1.5, and cohesive failure in concreteIII. Construction Process1. Pretreatment: Use compressed air to blow out dust and contaminants from the concrete cracks.2. Embedding Grouting Pipes: Place grouting pipes approximately every 500mm along the length of the crack.3. Sealing the Crack: Seal the entire surface of the crack using inorganic rapid-setting materials.4. Pressure Test: Seal the grouting pipes and conduct a water or air pressure test at 0.2~0.3MPa to observe whether the sealing is dense. Keep the concrete crack surface moist but without standing water inside the crack.5. Mixing: The mass ratio of CBGM polymer cement grout is: polymer cement grout : water = 10 : (2.5~2.8). Use a forced-action mixer or a modified impact drill for mixing, and use after thorough mixing. The mixed slurry should have uniform color, no powder lumps, sedimentation, uneven coloring, or bleeding, and its fluidity should meet the grouting consistency requirements. The mixed grout should be used immediately to avoid setting.6. Grouting: Load the mixed grout into a specialized pressure grouting tank and inject it continuously into the crack at a pressure of about 0.3MPa. For vertical cracks, grout from the bottom up one grouting nozzle at a time, and seal each filled nozzle immediately. During grouting, ensure that air is expelled from the crack. The last grouting pipe serves as an exhaust vent and should not be blocked to avoid hindering air discharge. more>

$77

Category: Chemicals/Synthetic Resins/Epoxy Resin

Company: 中大恒建北京新材料科技有限公司

Product Description: During the construction of acid-resistant bricks, when there are high requirements for properties such as waterproofing, corrosion resistance, and acid and alkali resistance, epoxy resin mortar is often chosen.1. Epoxy resin mortar is a high polymer molecular modified base polymer waterproofing and corrosion-resistant system, composed of epoxy resin modified latex, chloroprene rubber emulsion, polyacrylate, and other materials. It has excellent durability, impermeability, density, and extremely high adhesion, as well as strong waterproofing and corrosion-resistant effects. This material can withstand the corrosion of soda ash production media, urea, ammonium nitrate, seawater, and acidic and alkaline salts, making it very suitable for bonding acid-resistant bricks.2. Specifically, when acid-resistant bricks need to be laid in some special environments, such as chemical plants, power plants, sewage treatment plants, etc., these environments often have corrosive media like strong acids and alkalis, so it is necessary to use bonding materials with excellent corrosion resistance. Epoxy resin mortar is exactly such a material. It not only effectively resists acid and alkali corrosion but also ensures a strong bond between the acid-resistant bricks and the base layer, thereby extending the service life of the acid-resistant bricks.3. In addition, epoxy resin mortar also has good construction performance. It can be applied on damp or dry base surfaces, but the base layer must not have running water or accumulated water. At the same time, it also has advantages such as being non-toxic, harmless, and environmentally friendly, so it is widely used in the construction of acid-resistant bricks.4. It should be noted that when using epoxy resin mortar for the construction of acid-resistant bricks, it is necessary to follow the correct construction methods and steps to ensure construction quality and safety. At the same time, it is also important to choose high-quality products produced by正规 manufacturers to ensure the quality and performance of the product.Epoxy repair mortar is a material used for concrete repair and reinforcement construction in harsh environments. It is suitable for concrete repair in hydraulic structures under impact abrasion, cavitation, and freeze-thaw conditions; concrete repair in chemical plants, docks, bridges, culverts, airport runways, etc. It has high strength, high adhesion, good toughness, and excellent impact resistance, corrosion resistance, and durability.I. Application Scope1. Repair and reinforcement of concrete structure defects, honeycombs, and pitted surfaces;2. Repair and protection of hydraulic structure overflow surfaces after impact abrasion, cavitation, and freeze-thaw damage;3. Protection and repair of concrete or metal components against acid, alkali, and salt corrosion in chemical plants, docks, etc.;4. Repair and reinforcement of main load-bearing components such as highways and bridges;5. Anti-wear protection and repair of engineering parts such as airport runways and workshops;6. Rapid sealing and bonding of surface defects and joints of concrete pipes;7. Wear repair of floors in workshops, warehouses, etc.;8. Grouting repair of assembly gaps in prefabricated components.9. Pasting and jointing of acid-resistant bricks and granite. more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 深圳市华易测电子有限公司

Product Description: Rohde & Schwarz RSC External Mechanical Step Attenuator DC-6G can control 4 units up to 139.9 dB at 67 GHz, with 0.1 dB stepsRohde & Schwarz R&S Signal Generators:Analog Signal Generators: SMA100A, SMB100A, SMC100A, SMF100A, SMA100B, SMB100B,Vector Signal Generators: SMU200A, SMJ100A, SMBV100A, SMATE200A, SMM100A, SMBV100B,SMCV100B, SFI100A, SGS100A, SGU100A, SGT100A, SMW200A,RSC Option Number: 1313.8004.02 Step AttenuatorRSC Option Number: 1313.8004.03 Step Attenuator DC to 6GHz Front Panel N-Type FemaleRSC Option Number: 1313.8004.04 Step Attenuator DC to 6GHz Front Panel N-Type FemaleRSC Option Number: 1313.8004.05 Step Attenuator 0 dB to 115 dB Front Panel N-Type FemaleRSC Option Number: 1313.8004.13 Step Attenuator DC to 6GHz Rear Panel N-Type FemaleRSC Option Number: 1313.8004.14 Step Attenuator DC to 6GHz Rear Panel N-Type FemaleRSC Option Number: 1313.8004.15 Step Attenuator DC to 18 GHz Rear Panel N-Type FemaleRSC-Z405 Option Number: 1313.9952.02 External Step Attenuator DC to 40 GHz 2.92 mm (Female)RSC-Z675 Option Number: 1314.0065.02 External Step Attenuator DC to 67 GHz 1.85 mm (Female)RSC-Z41 Control CableRSC-Z42 Control CableR&S Rohde & Schwarz RSC Step AttenuatorSwitchable step attenuator, up to 139 dB, 67 GHzMain Features: Base unit frequency up to 6 GHz (139 dB, 1 dB/0.1 dB steps), 18 GHz (115 dB, 5 dB steps). Base unit controls external attenuators: 40 GHz, 67 GHz. One RSC base unit can control up to 4 external 40 GHz/67 GHz attenuators. The base unit offers excellent repeatability and accuracy. Frequency response correction and user calibration.Flexible and Versatile AttenuatorThe RSC is a switchable mechanical step attenuator. It is available in various models with frequencies up to 6 GHz and 18 GHz, and can also control compact external units up to 40 GHz and 67 GHz. The base unit provides a graphical user interface for various settings, calibration, and configuration operations of external modules. All models feature RF connectors on the front or rear panel for rack mounting. The base unit can also automatically detect and control 40 GHz/67 GHz external high-frequency units via USB. The RSC is a universal, flexible, high-performance sweep attenuator suitable for signal source and receiver calibration, as well as high-power test setups.Features and AdvantagesWide Frequency and Attenuation RangeUp to 67 GHz, 139 dB attenuationThe RSC offers a broad frequency and attenuation range, making it suitable for various applications and a versatile tool for the laboratory.RF PerformanceExcellent repeatability and accuracyThe RSC has a specified repeatability of 0.02 dB (typical) and excellent attenuation accuracy, making it ideal for calibrating signal sources, receivers, and integrated calibration systems. Including test cables in the attenuation value can further improve user calibration accuracy.Flexible ConfigurationGraphical user interface for personalized settingsOperators can use the clear graphical user interface to configure the RSC and apply it in various applications. The attenuator's features include various calibration functions, the ability to control external attenuators, and the capability to combine up to four external RSC units to form a new logical attenuator.Rohde & Schwarz RSC External Mechanical Step Attenuator DC-6G can control 4 units up to 139.9 dB at 67 GHz, with 0.1 dB steps more>

$23

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 直尚化工(上海)有限公司

Product Description: more>

Negotiable

Category:

Company: 北京纵横天成科技有限公司

Product Description: more>

$10

Category: Chemicals/Food & Feed Additives/Defoamers

Company: 郑州超凡化工有限公司

Product Description: Brand: Tongyuan/Kelduo   25kg/bag, 1kg/bagSodium Diacetate can be provided in 1kg aluminum foil bagsModel: Food Grade, Industrial Grade, Feed GradePackaging: 25kg cardboard drum (lined with polyethylene bag)Content: 99.9%Origin: Domestic/ImportedCAS: 126-96-5Appearance: White powderUsage: Preservative, Antifungal Agent, Chelating Agent, Flavoring Agent, pH Regulator, Meat Product Preservative[Product Name] Sodium Diacetate[Common Name] Sodium Diacetate (SDA)[English Name] Sodium diacetate[Molecular Formula] C4H7NaO4•XH2O[Structural Formula] CH3COONaCH3COOH•H2O[Molecular Weight] 142.09[Appearance]Sodium Diacetate is a white crystalline powder or crystalline solid with an acetic acid odor, non-toxic, and easily soluble in water and ethanol.[Product Usage]Sodium Diacetate is a versatile food chemical, primarily used as a preservative, antifungal agent, chelating agent, flavoring agent, pH regulator, and meat product preservative in the food and feed industries. It is also a key raw material for compound antifungal agents. In addition to its excellent antifungal, preservative, and freshness-preserving effects, Sodium Diacetate (SDA) can enhance appetite, promote feed conversion and absorption, and improve the utilization of protein in feed. It is widely used as an antifungal agent, preservative, flavoring agent, disinfectant, and pH regulator. Some examples include:1. Adding 0.1-0.2% (1-2 kg/ton) of SDA to feed can effectively prevent mold growth, extending the storage period of feed by 1-2 months. Adding 0.1-0.3% of SDA to compound feed and silage can preserve the feed for 3-5 months.2. As a nutritional flavoring agent:Adding 0.05-0.2% of SDA to pellet compound feed can increase protein utilization by 11%, improve fish weight gain by over 10%, increase piglet weight gain by 6-8%, enhance weight gain in broilers and ducks by 6-10%, and boost weight gain in beef cattle by 15%. Feed intake generally increases by 10-20%.[Packaging and Storage]1. Sodium Diacetate is packaged with a plastic bag as the inner layer and a woven bag as the outer packaging, with a net weight of 25kg.2. Store Sodium Diacetate in a sealed, cool, dry place, protected from light and moisture. Do not store with other alkaline substances.[Technical Specifications] Sodium DiacetateGrade: Food Grade, Feed GradeSodium Acetate%   58.0-60.056.0-58.0Moisture%  ≤2.0      ≤4.0pH (10% aqueous solution)4.5-5.0  4.5-5.0Formic Acid and Readily Oxidizable Substances%≤0.2  ≤0.2Arsenic (as As)%≤0.0003  ≤0.0006Heavy Metals (as Pb)%≤0.0001  ≤0.002 more>

Negotiable

Category: Chemicals/Water Treatment Agents/Phosphorus Removal Agents

Company: 成都化夏化学试剂有限公司(高新分公司)

Product Description: CAS NO:70142-34-6EC NO:Molecular Formula:Molecular Weight:Synonyms:;12-HYDROXYSTEARICACID-POLYETHYLENEGLYCOLCOPOLYMER;POLYETHYLENEGLYCOL-30DIPOLYHYDROXYSTEARATE;Molecular Structure: more>