Offers to Sell

Dodecanol ester has many advantages. It has good resin compatibility, low dosage, low film-forming temperature, good film leveling property, good color development, low freezing point, better hydrolytic stability, and low toxicity. It is an excellent film-forming aid for latex paint and is particularly suitable for various water-based coating systems such as emulsions, latex paints, and adhesives synthesized from methacrylate, styrene, and vinyl acetate as raw materials

Minimum Order: 16 pieces

Sodium Percarbonate offers many of the same functional benefits as liquid hydrogen peroxide. It dissolves into water rapidly to release oxygen and provides powerful cleaning, bleaching, stain removal and deodorizing capabilities. As Sodium Percarbonate is a kind of new high effective bleaching raw material for detergent, with advantage of no odor, no toxin, and no pollution. Due to the bleaching capacity of active oxygen released into the water, Sodium Percarbonate shows well performance. Sodium Percarbonate also is one disinfecting agent,it can kill coliform, staphylokinase, hepatitis bacterium and so on, therefore it is used as defecting agent in Hospital,Public Place,and to disinfected Medical Instrument, False Teeth, Fruit tools and Fruite and so on. Along with the development of aquiculture, usages of Sodium Percarbonate in such domains are increasing. Many detergent manufacturers home and abroad have being adopted Sodium Percarbonate as bleaching raw material instead of Sodium perborate or others.

Minimum Order: 27

-Rectractable & Durable design with Roxtone PCD drums & protection caps; -Four sets 1.5 Meters long detachable snap-on MPO to HDMI cable on each side; -Extend full 7680 x 4320(8K), 4096 x 2160 (4K), 3840 x 2160 (2K) at 60Hz 4:4:4 video signals -Fully supports HDMI 1.4, 2.0 & 2.1 spec, including eARC, 21:9 Aspect Ratio and more -PCM, DTS-HD Master and Dolby Digital True HD Surround Sound compatible -Pure fiber transmits EMI-Free singnal up to 500m for 4K/60P -Supports HDCP 2.2 / EDID / DDC / CEC -Custom MPO jumper cable length up to 500m

Minimum Order: 1 bags

Model Number:5o1045500300400NK Frequency Range:300~400MHz Insertion Loss:0.6 dB Isolation:18dB VSWR:1.3 Forward Power:300W Reverse Power:300W Connector Type:N Female Temperature:-30 ~ +70℃ Dimension:45*50*24mm RF power amplifier protection. Digital, Satellite, Mobile Communication. Medical, Communication, Security. Military, Space and Commercial applications. 5o.com is a modern high-tech enterprise specializing in passive RF and microwave components, integrating R&D, production, and sales. The company focuses on technological innovation as its core and relies on technology leadership. The company's main products: Microwave RF isolators, circulators, coaxial terminations, coaxial attenuators, power splitters/dividers, waveguide to coaxial adapters, directional couplers, RF filters, and duplexers/multiplexers and other microwave passive components.

Minimum Order: 1 bags

The DIN6343 Clamping Collet is a standardized, high-precision workholding component designed according to DIN 6343 German Industrial Standards, ensuring reliable performance, interchangeability, and accuracy in CNC machining, turning, and grinding operations. Known for its robust construction and exceptional concentricity, this collet provides stable clamping force, excellent repeatability, and extended tool life — making it an essential component in modern metalworking and manufacturing industries. DIN 6343 CLAMMPING COLLET Model D1(mm) D2(mm) L(mm) Hole size(mm) Wt(kg) round square hex DIN6343-F17.5 17.5 22 51 13 8 10 0.05 DIN6343-F22 22 30 55 16 11 13 0.09 DIN6343-F27 27 38 72.7 22 15 19 0.10 DIN6343-F28 28 38 70 22 15 19 0.12 DIN6343-F32 32 45 75 26 18 22 0.27 DIN6343-F35 35 48 80 30 21 26 0.35 DIN6343-F42 42 55 94 36 25 30 0.49 DIN6343-F48 48 60 94 42 29 36 0.57 DIN6343-F56 56 68 94 50 35 42 0.65

PDLC Nematic liquid crystal RM82 125248-71-7 Nematic liquid crystal RM82 125248-71-7 1,4-BIS-[4-(6-ACRYLOYLOXYHEXYLOXY)BENZOYLOXY]- , 2-METHYLBENZENE C39H44O10 HPLC: 95% MIN. Established in 2007, Qingdao QY Liquid Crystal Co., Ltd is a leading manufacturer specializing in high-quality nematic liquid crystals, primarily used in PDLC smart film and high grade of LC display. With over 18 years of nematic liquid crystals production expertise. Our LCs are widely exported to Europe, the United States, South Korea, and other global markets. The capable of our producing approximately 5000 kilograms per month. We signed the Exclusive Agency Agreement with our South Korean customer from 2011

Minimum Order: 20 square metres

1. QM ACCU-Lock Precision Machine Vise is main attchments to precision millings grinders CNC machines, it is particularly suitable for the finishing of precision parts. 2. Parallelism 0.025mm/ 100mm, squareness 0.025mm. 3. The special segment in the movable jaw forces the vertical pressure downward when the horizontal.pressure works, so that this jaw does not lift the workpiece. 4. For positions allow extra capacity to change opening of jaw. 5. As the thrust component of the screw is equipped with thrust needle bearing if can be easily operated. Order No Width of Jaw(mm) Height of Jaw (mm) Max.Opening (mm) GW/NW (kg) Paking Shape  LxWxH (cm) QM16100 100 32 100 17/16 paper case 38x25x18 QM16160 160 45 140 40/38 49x32x23 QM16200 200 50 190 75/69 wooden case 62.5x41x25.5

1. Using ultra-fine grain alloy bars for processing carbon steel, tool steel, die steel, alloy steel, cast iron 2. Suitable for processing materials within HRC55 3. Suitable for high speed machining in dry or wet cutting conditions Carbide end mill holder It can be used for processing tool steel, alloy steel, pre-hardened die steel and other high hardness materials. Universal 2-flute flate bottom end mill, can be widely used for profiling and other purposes. The surface roughness of the workpiece after processing is good. High heat-resistant coating enables high-speed machining. Diameter length of cut shank Dia overall Length 1.0*3*4*50*2F 1 3 4 50 1.5*4*4*50*2F 1.5 4 4 50 2.0*6*4*50*2F 2 6 4 50 2.5*8*4*50*2F 2.5 8 4 50 3.0*8*4*50*2F 3 8 4 50 3.5*10*4*50*2F 3.5 10 4 50 4*10*4*50*2F 4 10 4 50 4*15*4*75*2F 4 15 4 75

Material: 40Cr Hardness: HRC48-52 Accuracy , : 0.005mm Package: Plastic box Type: BT30 BT40 BT50 Balanced: G6.3/12000rpm   G2.5/20000rpm Standard form: AD  AD/B According to needs to be possible to provide the balanced hilt,the standard precision is G6.3/12000rpm.the precise precision is G2.5/20000rpm. The holder is made of imported high strength material andhas high wear resistance after special treatment The shank is connected with the spindle of the machine,and the front end is used in conjunction with various internalcone drillchucks OrderNo. BT-NO.S-L1 L2 L D D1 Drawbar thread Wt(kg) BT30-J1-45 16.669 110 9.754 31.75 M12 0.60 BT30-J2-45 22.225 115.6 14.199 31.75 M12 0.70 BT30-J3-45 30 956 124.4 20.599 31.75 M12 0.80 BT30-J4-45 42.069 135.4 28.55 31.75 M12 0.85 BT30-J5-45 47.625 141 35.89 31.75 M12 0.90 BT30-J6-45 25.4 118.8 17.17 31.75 M12 0.75 BT130J33-45 25.4 118.8 15.850 31.75 M12 0.75

Capable of most monopolar and bipolar surgical procedures and packed withdependable safety features, the WMV630E satisfies the veterinarian's demands with precision, safety, and reliability. Main Feature - 3 Monopolar Cut: Pure Cut, Blend 1, Blend 2 - 2 Coag: Spray, Forced, - 1 Bipolar Output: Vessel Sealing(Provide exceptional coagulation and transection of vessels up to 7mm in diameter.) - CQM Contact Quality Monitoring System - Electrosurgical Pens and Foot Switch Control - Recently Mode, Power and Other Parameters - Quick Adjustment of Power and Volume - Cut and Coag in an Intermittent Manner

Minimum Order: 10 long tons

Material: 65Mn Hardness: clamping part HRC55-60 elastic part HRC40-45 This unit is applicable to all sorts of lathes, which spindle taper hole is 5C, such as automatic lathes, CNC lathes etc. Accuracy: 0.015mm Type: Round hole,

Microcrystalline wax is employed in packaging paper primarily for the following purposes: Exceptional moisture and water barrier properties: It effectively prevents the penetration of water vapour and liquid water, safeguarding contents from dampness. This constitutes its core function. Enhanced gloss and aesthetic appeal: It imparts a lustrous finish to the packaging paper surface, elevating the perceived quality of the product's appearance. Enhanced abrasion resistance and durability: The wax coating increases the mechanical strength of the paper surface, reducing wear during transportation and handling. Typical application areas include: Industrial packaging Rust-proof packaging paper for metal products Moisture-proof inner liners for fertilisers and chemical products Sealing layer for composite paper cans.

The quality of a skeleton oil seal is primarily determined by two key dimensions: appearance integrity and performance reliability. These directly affect whether the seal can maintain long-term sealing effectiveness under real operating conditions. Appearance Standards Rubber Section: The surface should be smooth, free from bubbles, cracks, impurities, or missing material. Any defect may cause sealing lip failure. Metal Frame (Skeleton): The rubber coating must be complete with no exposed metal. The frame surface should be free of rust and burrs. Spring: Must be intact without breakage, with uniform tension and no damage to the groove. Lip (Edge): Should be flat and sharp, without notches, warping, or dents, ensuring tight contact with the shaft surface. Dimensional Accuracy: The inner diameter must fit the shaft properly. Excessive tightness causes heat and wear, while looseness leads to leakage. Performance Standards According to GB/T 9877.1-2008 (Radial Shaft Lip-Type Seals) and ISO 6194- 1:2007 international standards: Oil Resistance: After immersion in transmission oil at 70 ± 5 °C for 24 hours, weight change should remain within −3% to +5%. Gasoline/Benzene Resistance: Weight change should not exceed +20% after immersion in the mixture. Hot Air Aging (120 °C × 70h): Hardness change ≤ +10, tensile strength reduction ≤ 15%, elongation reduction ≤ 40%. Sealing Performance: No leakage should occur under specified pressure and rotational speed. Friction Performance: Low starting resistance, minimal frictional heating, and long-term operation without burning the lip or oil spillage. By applying these inspection criteria, the overall quality of a skeleton oil seal can be effectively judged. A high-quality oil seal ensures longer service life and more reliable sealing performance. Therefore, attention to these details is essential during selection and procurement.

Minimum Order: 1000

For skeleton oil seals stored under proper warehouse conditions, a practical control limit is about 3 years from the manufacturing date, and the upper limit should not extend beyond 5 years. Once the storage time goes beyond that window, the seal should be treated as an “expired” item and must pass an inspection before it is allowed to be installed. Why do we stay in the 3–5 year window? Different elastomers, different limits NBR-based oil seals Role: Workhorse material for mineral oil applications, widely used and cost-effective. Typical policy: Many plants limit stock age to about 3 years, with checks required after that. Reason: NBR is relatively sensitive to oxygen, heat, and ozone, and tends to harden and lose elasticity faster. FKM-based oil seals Role: Used where high temperature and aggressive oils are present. Typical policy: If stored correctly, 5 years is usually acceptable, but many companies still review the parts after around 3 years. Reason: FKM offers better resistance to heat and oxidation, yet it is not immune to long‑term aging. Special compounds (ACM, HNBR, etc.) Because volumes are lower and risk awareness is higher, manufacturers and end users often adopt conservative rules similar to NBR in terms of stock age control. Rubber does not stay “fresh” on the shelf Even when an oil seal is never installed, the rubber is changing all the time: Oxidation: Oxygen reacts with the polymer network, leading to chain scission or extra cross‑linking. The seal feels harder and less flexible. Ozone attack: Static rubber surfaces under slight strain are vulnerable to micro‑cracks caused by ozone. These cracks may be invisible at first but can become leakage paths in service. Heat and light: High temperature, frequent temperature swings, sunlight or strong UV light can multiply the aging rate. Permanent deformation: If seals are compressed, bent, or stacked incorrectly, the lip may take a permanent set and fail to exert enough contact pressure on the shaft. In practice, none of these processes has a sharp “deadline”. Instead, they accumulate gradually, and the 3–5 year window is a compromise between material capability and quality assurance. What do standards and industry practices roughly say? Different companies quote different numbers, but most of them are aligned with generic rubber storage guidelines: International rubber storage guidelines (such as ISO-type documents) These usually state that rubber products can be stored for several years under defined conditions, but must be re‑inspected after a certain period before use. European and automotive standards (e.g., some DIN/SAE-related documents) They often keep the storage life of rubber sealing products in the order of 3–5 years and clearly separate “storage time” from “service life”. That is why you will see things like: A main equipment manufacturer specifying: “maximum stock age of oil seals: 3 years.” A seal producer stating in its documentation: “recommended use within 5 years; re‑inspection required beyond this period.” They are looking at the same technical reality from different positions: one is a conservative quality policy, the other is a material capability statement under ideal conditions. Storage requirements you should enforce Environmental conditions Temperature: Keep long‑term storage within roughly +15 to +25°C, away from heaters, steam lines, and hot air outlets. Humidity: Maintain relative humidity in the 40%–70% range to avoid corrosion of metal parts and mold growth. Light: Store seals in closed boxes or opaque shelves, with no direct sunlight or strong UV lamps. Ozone: Do not place shelves next to electric motors, welding machines, or high‑voltage equipment, as these are typical ozone sources. Packaging and stacking Keep original packaging: Do not break bags or boxes unless necessary; re‑seal partially used inner bags carefully. Avoid deformation: Do not overload cartons, and do not let sealing lips press and twist against each other for long periods. Keep away from chemicals: Do not store oil seals together with paints, solvents, fuels, acids, or alkaline chemicals. Their vapors can damage rubber. Management practices Track both manufacturing date and receiving date in your system. Apply FIFO (first in, first out) strictly to avoid “forgotten stock”. Carry out a visual and manual check at least once every 12 months for hardness, elasticity, cracks, and lip condition. If you want to formalize shelf life and storage of skeleton oil seals in your organization, you can: Define clear age limits: Any seal older than 3 years in stock is labelled “re‑inspection required” and cannot be installed directly. Convert storage rules into a written procedure: Specify temperature, humidity, light, ozone, and stacking requirements in simple, enforceable clauses. Classify by material: Use stricter control for NBR, with slightly more flexibility for FKM, but keep the absolute limit around 5 years. Be extra cautious for critical equipment: For high‑risk or high downtime‑cost applications, inspect every seal before installation regardless of stock age.

Minimum Order: 1000