$15

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: 直尚化工(上海)有限公司

Product Description: more>

$24

Category: Chemicals/Plastics & Products/Plastic Raw Materials

Company: 直尚化工(上海)有限公司

Product Description: Grade: PPE-45Type: Chlorinated Polypropylene Modified Acrylic ResinApplication: PP Substrate PrimerFeatures: Adhesion to PP substrate, suitable for colored paint, silver powder paint, excellent silver powder alignment, good application propertiesTechnical SpecificationsItem Parameter IndexAppearance Transparent viscous liquidColor ≤3Non-volatile content (%) 45±1Viscosity Z2-Z4TG value (°C) 43 more>

$26

Category: Chemicals/Plastics & Products/Plastic Raw Materials

Company: 直尚化工(上海)有限公司

Product Description: Grade: 642-75Type: Hydroxy Acrylic ResinApplication: High-appearance PU Clear CoatFeatures: High weather resistance, chemical resistance, high solid contentTechnical SpecificationsItem Parameter IndexAppearance Transparent viscous liquidColor ≤1OH% (solid basis) 4.2Viscosity (25°C, Gardner) Z3-Z5Non-volatile content (%) 75±1Acid value (mgKOH/g) 6-9Zhishang Chemical (Shanghai) Co., Ltd. is a professional resin enterprise dedicated to providing high-quality and cost-effective resins for the coatings, inks, and adhesives industries. Upholding the philosophy of "Creating Value for Customers with Chemistry," we strive to become a professional resin service provider both domestically and internationally.Zhishang Chemical (Shanghai) Co., Ltd. specializes in offering high-quality and cost-effective professional resins for the coatings, inks, and adhesives industries. Our production base is located in Jining, Shandong, while our sales center is in Shanghai. Our products are not only widely recognized by domestic customers but are also exported to over ten countries. Advanced automated production equipment ensures stable product quality. An excellent technical team guarantees continuous product innovation and improvement in line with market demands. For our customers, we are not just a raw material supplier but a partner that helps solve project challenges and fosters mutual growth. Adhering to the philosophy of "Creating Value for Customers with Chemistry," we aim to become a leading professional resin service provider both in China and globally. more>

$18

Category: Chemicals/Alcohols/Cyclohexanol

Company: 东莞市建达胶粘制品有限公司

Product Description: Usage and Precautions for Rewetting Adhesive:1. Machine application or manual application.2. For manual application, use a fine soft brush to directly dip into the rewetting adhesive and apply it to the desired areas of paper products. Ensure even coating and allow it to dry naturally (or use hot air blowing) before proceeding to subsequent processing.3. For machine application, pour the adhesive directly or use an air pump to transfer it into the material container. The immersion roller should not splatter the adhesive; apply it evenly.4. The coating amount is generally 3–4 g/m².5. After processing, paper products can be manually moistened to check the bonding effect. If the bonded area is difficult to tear apart or the paper breaks, it is qualified. If it is easy to peel apart, it may be due to insufficient coating amount, inadequate bonding time, or other reasons. Investigate the cause accordingly.6. After use or when stopping the machine, promptly clean the adhesive container and pipelines with clean water. Pour any remaining adhesive into a clean plastic container and seal it to avoid unnecessary losses. more>

$135

Category: Chemicals/Food & Feed Additives/Agar

Company: 郑州超凡化工有限公司

Product Description: Brand: Jinhekang Bao Jiekang 10kg/box    SC20132092400365[Product Name] Sucralose[English Name] Sucralose[Molecular Formula] C12H19Cl3O8[Molecular Weight] 397.64[Chemical Name] 4,1,6-Trichloro-4,1,6-trideoxygalactosucrose[Product Characteristics]Sucralose is a white crystalline powder, almost odorless, non-hygroscopic, and highly soluble in water, ethanol, and methanol. It is currently the only functional sweetener produced from sucrose as a raw material, non-cariogenic, with good stability, especially in aqueous solutions.Source: Sucralose is a high-intensity sweetener obtained by selectively replacing three hydroxyl groups in the sucrose molecule with chlorine atoms. It was first approved for use in food in Canada in 1991.[Product Uses]Sucralose is a semi-natural, non-nutritive sweetener widely used in beverages, food, and other industries. As a new type of non-nutritive sweetener, it is an ideal food additive for individuals with obesity, cardiovascular diseases, and diabetes. Therefore, its application in health foods and other products continues to expand.This food is currently the most ideal high-intensity sweetener, suitable for consumption by children, youth, middle-aged, elderly, and individuals with various diseases, with no nutritional concerns.[Usage Limits]Sucralose tabletop sweetener: 0.05g per packet/tablet; Fruit juice beverages, ice pops, pastries, biscuits: 0.25g  Superior Properties:1. High sweetness, 600-650 times that of sucrose, with a pure sweet taste. The speed of sweetness perception, intensity of maximum sweetness, duration of sweetness, and aftertaste are very close to sucrose, making it an ideal high-intensity sweetener with comprehensive performance.2. Pure taste, without any off-flavors or bitter aftertaste. The sweetness profile almost overlaps with that of sucrose, which is unmatched by any other sweetener.3. Absolute safety, with no concerns regarding toxicology. Extensive long-term toxicological tests have proven its high safety, making it the most excellent functional sweetener currently available. It has been approved for use in over thirty countries, including the United States, Canada, Australia, Russia, and China. Over the past 20 years, sucralose has undergone rigorous and extensive safety evaluations. More than 100 scientific research reports have provided safety data confirming that sucralose is safe and reliable. Environmental studies further confirm that sucralose is harmless to fish and aquatic life and is biodegradable.4. Zero calories, does not cause obesity, suitable for diabetics, individuals with cardiovascular and cerebrovascular diseases, and the elderly.5. Does not cause blood sugar fluctuations, suitable for diabetics.6. Non-cariogenic, beneficial for dental health.7. Excellent solubility and stability, from acidic to neutral conditions, it maintains the sweetness of food, has a diluting effect on sour and salty tastes, masks unpleasant flavors such as astringency, bitterness, and alcoholic taste, and enhances spicy and creamy flavors. It has a wide range of applications. For example:（l）Good thermal stability, with temperature and pH having almost no effect on it. It is more stable than acesulfame potassium in baking processes, suitable for high-temperature sterilization, spray drying, baking, extrusion, and other processes in food processing.（2）Wide pH adaptability, suitable for acidic to neutral foods, and masks unpleasant tastes such as astringency and bitterness.（3）Easily soluble in water, with minimal foaming during dissolution, suitable for high-speed filling production lines of carbonated beverages.[Product Packaging] Sucralose is packaged with two layers of polyethylene plastic bags inside and a cardboard drum outside. Net weight 25kg.[Product Storage] Sucralose should be stored in a dry, clean, and cool place. Shelf life: two years. more>

$2150

Category: Others

Company: 河南喜客信息技术有限公司

Product Description: Common Configurations of Over-Temperature and Over-Pressure Protection Devices for Gas Storage Tanks with Safety CertificationCommon Manufacturer ConfigurationsModel KZB-3, Model ZBK380: Standard configuration supports one control for one unit; customizable to extend to one control for four units.Other Models: Some high-end devices support one control for eight or more units; confirmation based on manufacturer specifications is required.Standard Features (One Control for One Unit)Single Unit Control: In standard configuration, one protection device monitors only one gas storage tank and controls one air compressor.Core Components: Includes one temperature sensor, one pressure sensor (for over-pressure models), a control unit, and an alarm module.Typical Applications: Suitable for scenarios where a single device operates independently, such as basic safety protection in small mines or factories.Implementation Methods: Hardware Expansion: Increase the number of temperature/pressure sensors and configure multi-channel signal acquisition modules.Software Configuration: Program the control unit to set independent thresholds and联动 logic for each device.Typical Models: For example, Model KZB-3 and Model ZBK380 support "one control for four" customization, enabling simultaneous management of temperature and pressure for four gas storage tanks.Applicable Scenarios: Suitable for centralized gas supply systems or multi-device联动 requirements, such as large mines or industrial parks.Customization ConsiderationsCompatibility Design: Adaptation is required based on the model of on-site equipment, interface types, and control logic (e.g., whether 485 communication is supported).Installation Complexity: Multiple devices require synchronized wiring to ensure reliable connections between sensors and the control unit.Parameter Settings: Over-temperature/over-pressure thresholds and alarm methods for each device can be adjusted independently.SummaryThe standard "one control for one" configuration meets basic safety needs, while the customized "one control for multiple" achieves centralized management through hardware and software expansion, making it suitable for complex working conditions. Selection should consider the number of devices, installation environment, and budget. more>

$99999

Category: Electrical Equipment & Supplies/Assembly Power Tools/Electric Impact Wrenches

Company: Foshan Yingpeng Robot Intelligent Technology Co., Ltd.

Product Description: I. Technical Parameters:ModelYBDK-120/20VB(7.5)BrandYingpengStyleStandardHeavy DutyMotorBrushless MotorPower SourceLithium BatteryVoltage20V/7.5AhNo-load Speed3100r/min2200r/minTorque310N.M600N.MImpact Frequency3000IPM3500IPMScrew Diameter4-22mmOperation ModeHandheldHandheldNaked WeightApprox. 1.08KGApprox. 1.57KGExplosion-proof MarkEx d IIB T4 GbII. Product Features:1. Precision steel chuck prevents drill bit slipping2. One-button forward/reverse adjustment3. Imported brushless motor4. Tungsten steel drill bit, high-aluminum head5. Three-mode adjustable6. Three-proof body7. Powerful heat dissipation more>

Negotiable

Category: Chemicals/Pharmaceutical Raw Materials/Amino Acids & Derivatives

Company: Ruiyixiang Hangzhou Imp. & Exp. Co., Ltd.

Product Description: more>

Negotiable

Category: Chemicals/Water Treatment Agents/Fluoride Removal Agents

Company: 成都化夏化学试剂有限公司(北京公司）

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

$0.1

Category: Hardware & Tools/Seals & Gaskets/Other Seals

Company: 惠州市香江兰昕实业有限公司

Product Description: Micro sealing rings, rubber strips, O-rings, gaskets, small-diameter rubber rings, finest sizes 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 0Rich product series dimensions, hardness 20, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90 hardness, products made from imported raw rubber, micro fine tolerance dimensions ±0.01-0.03MMhttps://www.912688.com/Huizhou Xiangjiang Lanxin Industrial Co., Ltd.4th Floor, No. 89 Aimin East Road, Danshui, Huiyang District, Huizhou City, Guangdong ProvinceBusiness scope: Rubber products, custom rubber rings, non-standard seals, mold industrial standard parts, rubber and plastic material technology, rubber parts.The company is dedicated to the production and trade of high-precision machinery, aerospace, semiconductors, lasers, fluid equipment, optoelectronics, medical equipment, precision instrument accessories, unmanned aerial vehicles, semiconductor hardware and plastic parts, high-precision microelectronic equipment accessories, new energy precision hardware rubber and plastic parts, precision rubber products   hardware and plastic accessories, high-precision tolerances in millimeters, micron-level error mold forming, communication equipment accessories, mechanical accessories, optical accessories, medical equipment accessories, integrated production and sales of unmanned interface machine accessories, etc. High-precision tolerance 0.001MM testing accuracy, hardware and plastic products with tolerances less than millimeters reaching micron level, product precision quality, rubber and plastic small product tolerances can reach as small as 0.01-0.03 vulcanized molds (different from hardware and plastic molding methods), mold injection molding and vulcanization production of precision parts, precision plastic product parts, high-precision mechanical accessories, research, development, production, and sales of plastic hardware electronic products. Sealing ring products are sold in North America and the European Union with strict specifications for rubber ring products, Japanese production management, introduction of Japanese industrial production management models, implemented 5S management and ISO systematic management in the 1990s with excellent quality, strictly produced according to rubber characteristics and vulcanization, strictly implementing quality standards SOP SIP operations, strictly following: man, machine, material, method, environment, rule-based production. Currently, there are 8600 types of molds, materials imported raw rubber PA, nylon, hardware accessories, integrated product solutions, rich variety of materials PUR PU soft hardness control VITON O-ring FKM NBR rubber rings IIR CR neoprene NR SBR rubber, PA EPDM HNBR rubber sealing rings FFKM FLS MVQ FSIL PVMQ rubber sealing rings gaskets POLYSULFIDE AU ECO ACM rubber plastic  FMVQ NYLON polyurethane rubber fluorine rubber FKM FPM FMC FLUOROCARBON silicone SILICONE nitrile rubber rings styrene polymer rubber butadiene sodium rubber O-rings BUNA, chlorohydrin chloroprene CHLOROPRENE rubber rings hydrogenated butadiene rubber rings EPDM sealing rings fluoro silicone rings FFKM FFPM FFMC FVT perfluoro rubber sealing rings FLAS fluorocarbon rubber PA PTFE F4 acrylate rubber isoprene sealing pads cis-polyethylene material VAMAC acrylate and other rubber ring material types. Specifications include over 8000 rubber ring sizes, American standard plastic hardware custom   sealing rings Japanese standard, European standard/French standard O-rings star rings national standard optical rubber rings, complete specifications, 8600 seal size series high-precision rubber parts standards and custom rectangular rings, rubber gaskets, foot pads foot pad seals X star rings ED rings rubber plugs silicone rubber miscellaneous parts product development rubber components. Using German, American, and Japanese plastic rubber raw rubber products, custom products standard food grade national standard grade FDA vl94v0 PAHS ROHS REACH DFA LFGB IATF16949-2016 more>

$3000

Category: Instruments & Meters/Specialized Instruments/Other Specialized Instruments

Company: Shenzhen Bonard Precision Instrument Co., Ltd

Product Description: It is manufactured in accordance with standards such as UL60950 Figures NAF.2 and NAF.3, IEC60950, and IEC62368 Figure V.4, and is used for testing the safety performance of paper shredder entrances. It is also known as the paper shredder test probe.Overview: The wedge probe is produced based on standards such as UL60950-1 and IEC62368, and is used for safety testing of office paper shredders.Technical Parameters:Total length of the test tool: 300mm, width of the test tool: 50mm, bent section: 30/30/40mm more>

$2500

Category: Instruments & Meters/Flow Instruments/Other Flow Instruments

Company: Chengde Shenghe Intelligent Instrument Co., Ltd

Product Description: The shaft seal water flow meter is a critical monitoring device that ensures the stable operation of industrial equipment shaft seal systems, primarily used for real-time regulation and protection of cooling and lubricating water flow and pressure.Dual mechanical shaft seal water flow meters combine both flow regulation and pressure regulation. These functions enable users to more accuratelycontrol the flow and pressure of shaft seal water, ensuring the safe operation of shaft seal devices.Main Features:· Monitors and adjusts the flow and pressure of water within the shaft seal device, suitable for equipment with shaft seals (including mechanical seals and packing).· Easy to install, operate, read, and clean· Allows cleaning of the flow tube without interrupting the shaft seal water circuit· Directly determines the operating status and issues of the shaft seal based on readings, such as leaks or blockagesTechnical ParametersDual mechanical seal: includes pressure gauge and pressure control knobFlow Range0-3.0L/min0-6.0L/min0-8.0L/min0-15.0L/minPressure Gauge Range10bar16bar25bar (only for metal aluminum gauge body)Connection MethodHose connection (hose inner diameter φ10, optional external fittings 1/4", 3/8", or 1/2")Quick-connect fitting (hose specification Ф12*1.5)Ferrule connection (hard tube outer diameter Ф10)Internal thread connection 1/4", 3/8", or 1/2" (G or NPT)Installation TypeFloor standCantilever bracketAlarm TypeAC 90-250V normally open/normally closedDC 10-30V two-wire systemAccessory OptionsG Filter    V Check Valve more>

Negotiable

Category:

Company: Zhengzhou Kunze Signage Manufacturing Co., Ltd.

Product Description: more>

Negotiable

Category: Machinery & Equipment/Pipes & Fittings/Other Pipe Materials

Company: 扬州市洪基钢管有限公司

Product Description: EN 10216-2 Seamless Steel Tubes for Pressure Purposes more>

$168

Category: Chemicals/Inorganic Salts/Sulfates

Company: 河南邦信防腐材料有限公司

Product Description: Long-lasting reference electrodes: Zinc reference electrode / Copper / Copper-copper sulfate reference electrode (CSE) / Silver / Silver-silver chloride reference electrode (Ag/AgCl)Zinc Reference ElectrodeTypically made of high-purity zinc, it offers excellent stability and conductivity. In soil and freshwater environments, the potential of the zinc reference electrode remains relatively stable, providing accurate reference potential over extended periods. With a long service life, it is suitable for long-term monitoring of corrosion conditions in underground pipelines, hydraulic structures, and more.1. Copper / Copper Sulfate Reference Electrode (CSE)Composed of a copper rod and copper sulfate solution, this is a widely used long-lasting reference electrode. Its potential is stable and highly accurate, performing well in neutral and alkaline soils.For example, in the cathodic protection systems of urban gas pipelines, copper/copper sulfate reference electrodes are often used to monitor the protection potential of pipelines. Due to their stable performance, they provide a reliable reference basis for long-term pipeline protection.2. Silver / Silver Chloride Reference Electrode (Ag/AgCl)This electrode offers high precision and stability, performing exceptionally well in environments containing chloride ions, such as seawater. Its electrode potential is less affected by temperature and remains stable across a wide temperature range.For instance, in marine engineering, such as the anti-corrosion monitoring of steel structures on offshore oil platforms, silver/silver chloride reference electrodes are widely used. They provide a stable reference potential over the long term, delivering accurate control signals for the platform's cathodic protection system.Long-lasting Structural Composition:Copper Electrode: Typically made of copper with a purity of no less than 99.7%, ensuring good conductivity and chemical stability.Saturated Copper Sulfate Solution: Serves as the electrolyte, providing a medium for ion conduction and ensuring smooth electrode reactions.Permeable Membrane: Made of highly permeable microporous materials, such as ceramics, which allow ions to pass through while preventing solution leakage, maintaining ion exchange balance between the electrode's interior and the external environment.Insulating Shell: Protects the electrode and prevents external interference. Typically made of pressure-resistant and corrosion-resistant materials like PVC or PPR.Working Principle: Based on the reversible chemical reaction between copper and copper sulfate to generate a stable potential as a reference. When the electrode is inserted into the solution to be measured, copper ions undergo redox reactions on the electrode surface, exchanging with ions in the solution to form a dynamic equilibrium, thereby producing stable potential readings.Features and Advantages:Stable Potential: Special materials and structural design ensure the permeability of copper sulfate and ion exchange, guaranteeing the stability of the reference electrode's potential. Potential stability is typically controlled within ±20mV, and even under polarization currents below 5uA, potential fluctuations remain less than ±30mV.Long Lifespan: Due to its unique design and material selection, the long-lasting copper sulfate reference electrode has an extended service life. It can be used for several years at room temperature, even up to 10 years, reducing the need for frequent replacements and lowering usage costs.Easy Maintenance: Generally requires minimal maintenance. For example, some designs allow for replenishing water by irrigating the buried environment to maintain normal operation. Additionally, the electrode cap is screw-connected to the electrode cavity, making it easy to refill the solution. A single refill can last for over a year.Wide Applicability: Widely used in various electrochemical measurements and cathodic protection systems, including measurements and monitoring in soil media. They can be used to test the polarization potential of structural steel to reflect its corrosion condition, making them essential tools in the field of metal corrosion and protection.High Measurement Accuracy: Provides a stable potential baseline, making electrochemical measurements more accurate. This is particularly important for applications requiring high-precision measurements. more>

$50

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Yantai Lesen Machinery Equipment Co., Ltd

Product Description: Due to fluctuations in raw material prices, the cost and models may vary. For specific quotations, please contact our sales staff. Thank you.In the depths of the mine, darkness and uncertainty coexist, with risks such as falling rocks and collapses posing threats to miners' safety. The mine-used anti-impact protective vest, as a crucial piece of protective equipment for miners, silently safeguards them in the narrow underground spaces. With it, there is an extra layer of reassurance. So, this is what a mine-used anti-impact safety vest looks like! Its main body consists of rigid protective plates made from special materials capable of withstanding certain impacts. Below the vest, there is a thoughtfully designed waist protection section that curves slightly upward to provide support for the lumbar spine. The vest comes in a bright orange-yellow color, making it highly visible in dimly lit mine environments!Features of the mine-used anti-impact safety vest:After wearing, it allows freedom of movement and does not interfere with workers' normal labor or other tasks.The product is thoughtfully designed, with a rational structure, aesthetically pleasing appearance, ease of use, low impact force, lightweight, compact size, and portability.Parameters of the mine-used anti-impact safety vest:Size: Small, Medium, Large, Extra LargeModel: YH-3, YH-2, YH-1, YH-0Height (cm): 180Vest Length (cm): 55.5±0.5, 57.5±0.5, 59.5±0.5, 61.5±0.5The mine-used vest, particularly the anti-impact safety vest, weighs only about 0.5 kilograms. It consists of straps, protective plates, cushioning padding, and connectors. The bakelite plates are interconnected and can flex with the back's movement, while multiple foam blocks are placed where the vest contacts the back. Here’s a quick guide on how to correctly wear the mine-used reflective anti-impact vest. First, loosen all adjustment buckles, drape the vest over your back to allow it to naturally conform to your back’s curve, then tighten the shoulder and waist straps in sequence to ensure the vest is securely fixed without shifting or wobbling. Quickly check if you’ve worn it correctly.Contact: Manager Hu Mobile: 16653525598 more>

$780

Category: Metallurgy & Minerals/Specialty Steel/Other Special Steel

Company: Xingtai Longcai Trading Co., Ltd.

Product Description: DY-AG5银焊片40%的用途DY-AG5银焊片40%是一种含有40%银的焊片，具有良好的焊接性能。根据搜索结果，我们可以了解到这种银焊片的具体用途和特性。特性银含量：40%熔点：677-732摄氏度合金成分：银、铜、锌、镍用途DY-AG5银焊片40%（等同于HAG-40B）具有以下用途：良好的流动性、渗透性和韧性：适用于需要良好流动性和渗透性的焊接场合。抗蚀性：适用于不锈钢的焊接和镍基合金及炭化钨的焊接。广泛应用于：机电行业电子行业家电行业五金行业汽配行业具体应用实例不锈钢焊接：由于其良好的抗蚀性，特别适用于不锈钢的焊接。镍基合金焊接：适用于镍基合金的焊接。炭化钨焊接：适用于炭化钨的焊接。总结DY-AG5银焊片40%是一种高性能的焊接材料，适用于多种金属材料的焊接，特别是在需要良好流动性和渗透性的场合。其广泛的应用范围使其成为许多行业中的重要焊接材料。 more>

$1650

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

Company: Xingtai Longcai Trading Co., Ltd.

Product Description: Uses of DY-Ag25 Silver Solder Strip (70%)DY-Ag25 silver solder strip is a material widely used in brazing processes. Its main components include silver, copper, phosphorus, and others. According to search results, 70% of the uses of DY-Ag25 silver solder strip are mainly concentrated in the following areas:Brazing Copper and Its AlloysAir Conditioning, Refrigeration, Electromechanical Industries: DY-Ag25 silver solder strip has good fluidity and filling ability, making it suitable for brazing copper and copper alloys in these industries.Workpieces Subjected to Vibration Loads: Such as band saw blades, as well as welding of electrical contacts like Ag/Cu, AgW, AgNi, and Ag.Brazing Stainless Steel and Hard Alloy ToolsStainless Steel and Hard Alloy Tools: DY-Ag25 silver solder strip is suitable for welding stainless steel and hard alloy tools, offering good mechanical properties, heat resistance, and corrosion resistance of the welded joints.Brazing Copper Bellows, Metal Eyeglass Frames, Precision Shunts, etc.Copper Bellows, Metal Eyeglass Frames, Precision Shunts: These precision devices require high smoothness of the weld seam and high joint strength, which DY-Ag25 silver solder strip can meet.Brazing Copper, Copper Alloys, Steel, and Other MaterialsWelding of Most Materials: DY-Ag25 silver solder strip has a moderate melting range, good wettability, and filling ability. It can weld most materials such as copper, copper alloys, and steel, offering low cost and economic practicality.Summary70% of the uses of DY-Ag25 silver solder strip are mainly concentrated in brazing copper and its alloys, stainless steel and hard alloy tools, precision devices, and most materials. Its good fluidity and filling ability, high joint strength, and cost-effectiveness make it widely used in these fields. more>

$99

Category: Machinery & Equipment/Compression & Separation Equipment/Vacuum Impregnation Equipment

Company: Youqi Compressor (Shanghai) Co., Ltd.

Product Description: Air Compressor Flywheel is a mechanical device used to store rotational kinetic energy, primarily applied in air compressors to balance the power system, adjust speed, and store energy. The flywheel has a large moment of inertia, functioning similarly to an energy storage unit. It can absorb and release energy during different operational phases of the air compressor, thereby improving the stability and efficiency of the power system.Working Principle of the FlywheelThe working principle of the flywheel is based on changes in angular momentum. During the operation of the air compressor, the flywheel absorbs rotational energy during the power stroke and releases energy in other strokes (such as intake, compression, and exhaust), thereby balancing the power output of the system and reducing vibrations and fluctuations. The angular velocity and moment of inertia of the flywheel determine the amount of energy it can store. Therefore, by adjusting the mass, size, and angular velocity of the flywheel, its energy storage efficiency can be optimized.Application of Flywheels in Air CompressorsIn air compressors, the main functions of the flywheel include:Connection and Startup: The flywheel assists in starting the air compressor by engaging with the starter's ring gear.Energy Storage and Balancing: The flywheel can absorb and release energy during different operational phases of the air compressor, helping to balance the power output of the system and reduce vibrations and fluctuations.Speed Adjustment and Power System Balancing: By storing and releasing energy, the flywheel can adjust the speed and power output of the air compressor, enhancing overall operational efficiency and stability.Structural Features of the FlywheelThe flywheel is typically a disc-shaped component with a large moment of inertia, with its mass concentrated on the rim to achieve efficient energy storage and release. There is a strict relative positional relationship between the flywheel and the crankshaft, usually ensured by positioning pins or asymmetrically arranged bolts to maintain balance during disassembly and assembly. 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>