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    30+ Years of Excellence in Rubber Transmission Technology

    Established in March 1995, Zhejiang Sanxing Rubber Co., Ltd. covers an area of approximately 8,000 square meters and currently has 176 employees, with an annual output value exceeding 86 million yuan. The company has been deeply involved in the rubber transmission belt field for many years, establishing an advanced production, testing, and experimental equipment system and possessing strong independent R&D capabilities.

    As a member unit of the National Belt and Pulley Technical Committee, the company's main products cover a full range of rubber belts, including toothed wedge belts, Poly V-Belts, multi-wedge belts, synchronous belts, Carbon Cord Timing Belts, double-sided toothed synchronous belts, variable speed belts, flat belts, and banded belts. These products are widely used in automobiles, motorcycles, bicycles, industrial and agricultural machinery, and household appliances, and are highly recognized in domestic and international markets.

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    ZHEJIANG SANXING RUBBER CO., LTD.

    PRODUCTS

    We specializes in designing and producing KAIHONG CHT power Carbon Belt,Raw Edge Cogged v-belt,Poly V-Belt,Double Sided Poly V-Belt,Timing Belt,Double Sided Timing Belt, Teeth-Wedge Belt,Variable Speed Belt, Flat Belt, Combined Belt and other related rubber products.

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    PRODUCTS
    ZHEJIANG SANXING RUBBER CO., LTD.

    APPLICATION

    These products are widely used in the area of automotive, scooter,industrial and agricultural machinery, household appliances,etc. We have high reputations among domesticate and overseas customers.

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    APPLICATION

    CERTIFICATES

    It has won 2 national invention patents and 24 utility models;organized the drafting of 2 national standards, participated in the drafting of 9 national standards and 4 industry standards.

    CERTIFICATES
    rubber belt

    SERVICES

    • The brand can be customized with the customer’s own trademark
    • Cooperate with a large number of OEM manufacturers and have a complete OEM number, which can be found as long as the OEM number is provided.
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    Customized Brand

    The brand can be customized with the customer's own trademark.

    OEM

    Cooperate with a large number of OEM manufacturers and have a complete OEM number, which can be found as long as the OEM number is provided.

    Pre-Sales Service

    24-hour service to answer customer questions.

    After-Sales Service

    Dedicated person responsible for returns and exchanges.

    Provide Trademark Authorization Letter

    We have high reputations among domestic and overseas customers.

    FAQ

    Questions about belt selection or customization? Find answers fast or contact our support team now.

    Q1: Are you a factory or a trading company?
    A: We are a direct factory in China—Zhejiang Sanxing Rubber Co., Ltd., operating under the brand Kaihong. We own all production, testing, and mold‑making facilities.
    Q2: Can you produce custom belts?
    A: Yes. With our extensive mold library and in‑house engineering team, we offer fully customized solutions for specific dimensions, materials, and performance requirements.
    Q3: What is your lead time?
    A: Standard orders: 15–25 days. Custom projects: discussed case‑by‑case. Our streamlined supply chain ensures on‑time delivery.
    Q4: Do you provide samples?
    A: Yes, samples are available for quality verification before mass production.
    Q5: Which markets do you export to?
    A: We export to North America, Europe, Russia, Southeast Asia, and South America, with a strong presence in automotive and agricultural sectors.

    Featured Products Explore Our Best-Selling Rubber Belts for Automotive & Industry

    Bicycle Carbon Cord Timing Belt
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    Bicycle Carbon Cord Timing Belt
    Kaihong Bicycle Carbon cord Timing Belt combines HNBR rubber, high-strength carbon fiber tensile cords, and a wear-resistant nylon tooth surface to provide ≥98% transmission efficiency, low elongation, quiet operation, and lubrication-free performance. Designed for e-bikes, urban commuter bicycles, internal-gear bikes, mountain bikes, and high-end road bikes, it offers a cleaner and lower-maintenance alternative to conventional chain drives.
    Motorcycle Carbon Timing Belt
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    Motorcycle Carbon Timing Belt
    Kaihong Motorcycle Carbon Timing Belt is designed for motorcycle drive systems that require clean, quiet, and stable power transmission. Reinforced with high-strength carbon fiber cords and HNBR rubber, it offers low elongation, strong tooth engagement, excellent wear resistance, and lubrication-free operation. It is suitable for scooters, cruisers, touring motorcycles, electric motorcycles, and custom builds, helping reduce routine maintenance while maintaining reliable performance under demanding riding conditions.
    High Torque Timing Belt
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    High Torque Timing Belt
    Reinforced with high-modulus carbon fiber or aramid tensile cords and optimized curvilinear tooth geometries, Kaihong high torque timing belts deliver massive torque capacity, zero backlash slip, quiet operation, and zero elongation maintenance. Available in H8M, 8MGT, H11M, H14M, and G14M pitch profiles. Contact our engineering team for roller chain conversion calculations, custom belt widths, and direct factory wholesale pricing.
    Industrial Carbon Fiber Timing Belt
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    Industrial Carbon Fiber Timing Belt
    Kaihong industrial carbon fiber timing belt incorporates high-modulus carbon fiber tensile cords embedded within a high-performance Hydrogenated Nitrile Butadiene Rubber (HNBR) elastomer matrix. Engineered to overcome the tensile limits of fiberglass and aramid cord designs, this belt delivers roughly half the elongation of aramid under dynamic load, eliminating position drift on high-speed servo axes.
    Agricultural Variable Speed Belt
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    Agricultural Variable Speed Belt
    Kaihong Agricultural Variable Speed Belt is designed for combine harvesters, corn and forage harvesters, feed grinders and other agricultural machinery. Available in HG–HO cross-sections, the belt can be configured with CR or EPDM rubber compounds, polyester or Aramid reinforcement, and wrapped or raw-edge cogged constructions. These options support reliable power transmission, stable speed adjustment and improved resistance to dust, moisture, heat, abrasion, vibration and sudden load variations.
    Agricultural Banded V-Belt
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    Agricultural Banded V-Belt
    Kaihong Agricultural Banded V-Belts are designed for high-power farming equipment such as combine harvesters, forage harvesters, and high-horsepower tractors. With an integrated reinforced tie band structure, these belts prevent rollover, twisting, and uneven loading, helping agricultural machines maintain reliable operation during demanding field work.
    ATV Variable Speed V-Belt
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    ATV Variable Speed V-Belt
    Kaihong ATV Variable Speed V-Belt products are designed for ATVs, UTVs, dune buggies, snowmobiles, and related CVT equipment. Standard, heavy-duty, high-temperature, abrasion-resistant, cold-weather, and customized options are available. Typical recommended operating ranges extend from approximately -45°C for selected cold-weather constructions to approximately +130°C for selected high-temperature configurations.
    Electric Motorcycle Carbon Fiber Timing Belt
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    Electric Motorcycle Carbon Fiber Timing Belt
    Kaihong Electric Motorcycle Carbon Fiber Timing Belt products are designed for high-torque electric motorcycles, electric dirt bikes, e-mopeds, shared fleets, and aftermarket conversions. They combine carbon fiber tensile cords, high-performance rubber or HNBR bodies, and nylon tooth-facing layers.
    Automotive Raw Edge Cogged V-Belt
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    Automotive Raw Edge Cogged V-Belt
    Modern vehicle accessory systems place continuous demands on belts operating around the engine. Alternators, water pumps, cooling fans, air-conditioning compressors, and power steering systems can experience rapid speed changes, high temperatures, limited pulley space, and repeated start-stop cycles. Kaihong Automotive Raw Edge Cogged V-Belt is designed for these conditions, with a cogged inner surface and raw-edge sidewalls that improve pulley engagement and bending flexibility.
    Wide-Angle Belt
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    Wide-Angle Belt
    Kaihong Wide-Angle Belt is designed for agricultural and industrial transmission systems exposed to high loads, impact forces, and high-speed operation. Its 60° wedge profile increases pulley contact for stable power transfer, while joined configurations help control belt movement in multi-belt drives. Available in CR and EPDM compounds, it provides reliable performance across different temperature and working environments.
    Flat Belt
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    Flat Belt
    Kaihong supplies flat belts for industrial power transmission and material handling applications, including conventional rubberized fabric belts, polyamide film composite belts, and high-speed endless belts. With customizable widths, lengths, thicknesses, and surface materials, these belts can be selected for textile machinery, printing and packaging equipment, machine tools, and conveying systems.
    American Standard Variable Speed V-Belt
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    American Standard Variable Speed V-Belt
    Certified to ISO 9001:2015 and ISO 14001:2015, Kaihong manufactures high-performance drive solutions including the premium American standard variable speed v-belt compliant with RMA/ARPM IP-25 imperial specifications. Designed for stepless speed regulation in North American equipment and exported industrial machinery, our drive belts deliver high lateral rigidity, precise angle matching, and outstanding wear resistance.

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