Years of Damping Fluid & Lubricant Expertise
Tons Annual Production Capacity
Acres State-of-the-Art Intelligent Factory
Filling Precision via Advanced Metering Lines
Within the high-precision domain of modern motorcycle assembly and maintenance, front fork oil plays a decisive role in determining overall ride stability, shock-absorption feedback, and component longevity. B2B procurement managers and international suspension brand owners demand more than just standard lubricants; they seek advanced hydraulic damping fluids that maintain stable operational parameters under extreme conditions.
Primary procurement criteria center on four key vectors: Viscosity Index Damping Stability, Cavitation and Anti-Foaming performance, Sealing Elastomer Compatibility, and Cost-Efficiency at High Volume. As a leading specialized supplier, Shandong Longhai Lubrication Technology addresses these challenges by developing tailored mineral-based, semi-synthetic, and premium ester-based formulations. Our product line supports diverse viscosity standards (from ultra-low 2.5W racing fluids to heavy-duty 20W oils), ensuring optimal fluid shear stability and continuous heat dissipation for high-stress suspension units.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a premier high-tech enterprise integrating research, development, production, and international logistics. With more than 15 years of industry experience, we have structured a highly competitive industrial chain designed to deliver superior lubrication and damping solutions to global industrial and transportation markets.
Our brand portfolio includes our proprietary flagship line "Century Longhai" alongside the globally recognized strategic cooperation brand British "A Ba" series. The entire product catalog—encompassing diesel/gasoline engine oils, hydraulic transmission fluids, specialized motorcycle fork oils, and industrial gear lubricants—is insured by PICC China People's Insurance Company to provide our global buyers with ultimate quality assurance and risk mitigation.
Our smart blending system continuously monitors temperature, viscosity, and chemical concentration, keeping viscosity deviations below 0.1 cSt.
Fully automated metering filling lines achieve 1‰-2‰ volumetric accuracy while boosting throughput by 20% to 35%, ensuring short lead times.
With over 5% of annual revenue allocated to R&D, we partner with prestigious laboratories to formulate next-generation suspension oils.
We configure semi-synthetic and fully synthetic oil matrices tailored to specific viscosity indexes (VI > 150), regional operating temperatures, and vehicle parameters. Our additives optimize anti-wear protection and reduce seal wear, meeting international benchmarks (API, ACEA, and specific OEM requirements).
Our operations adapt to batch size requirements, supporting pilot production runs for brand testing up to full-scale container shipments. We support diverse packaging profiles, including standard 1L bottles, customized 20L canisters, and industrial 200L drums, ensuring structural integrity for transoceanic shipping.
Modern motorcycle front suspension units demand lubricants that are highly stable and resilient. Shandong Longhai engineers products that perform consistently across wide temperature ranges, minimizing fading in off-road and high-speed touring environments.
Conventional suspension oils suffer from structural shear breakdown under continuous high-frequency oscillation, causing the fluid to thin out and lose damping resistance. Shandong Longhai uses highly stable shear polymers. This maintains a stable Viscosity Index, preventing fade in professional racing, long-distance touring, and rough off-road applications.
Air bubbles within the fork cylinder are compressibility hazards. Our formulations integrate advanced anti-foam additives that rapidly release entrained air, preventing emulsion formation. This ensures smooth damping stroke behavior and consistent front-end response.
Damping oil must interact safely with nitrile rubber, fluorosilicone, and other seal elastomers. Our chemically neutral base oil formulations prevent oil seal shrinkage or swelling, protecting against oil leaks and keeping dust out of the fork tube.
Damping oils optimized for ride comfort and long drain intervals. These formulas minimize internal friction to ensure smooth response over urban roads and highways, while preventing oxidation under continuous use.
Heavy-duty, high-VI damping fluids engineered to handle rapid suspension cycling and high impact forces. They prevent heat buildup and maintain consistent damping, even under muddy and dusty conditions.
Modern electric two-wheelers carry extra weight from battery packs. We design low-viscosity, high-capacity damping fluids that handle heavier loads and offer excellent thermal conductivity for cooling electric suspension systems.
Shandong Longhai operates in strict compliance with global quality and environmental standards. We hold certifications for ISO 9001:2015 Quality Management Systems, ISO 14001:2015 Environmental Management, and ISO 45001:2018 Occupational Health and Safety. Our automated production processes carry Mercedes-Benz OEM approvals, demonstrating our compliance with demanding automotive and motorcycle engineering standards.
Demand Analysis
Confirm formulation requirements and specifications.
Formula Development
Lab synthesis and testing of damping parameters.
Sample Testing
Physical field testing and laboratory verification.
Production Delivery
Intelligent blending, fast filling, and packing.
After-Sales Support
Ongoing logistics tracking and quality assurance.
Longhai
