Explore our foundational range of heavy-duty diesel engine fluids, industrial gear oils, and wear protection additives engineered for global distribution.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a leading high-tech enterprise integrating R&D, advanced production, and comprehensive global sales. We have dedicated more than 15 years to the development, synthesis, and blending of high-tier lubrication fluids and additive packages.
Our portfolio covers diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission fluid, anti-wear hydraulic oil, motorcycle lubricants, and customized industrial fluids. Represented by our signature domestic brand "Century Longhai" and strategic cooperation brand British "A Ba" series, our global quality assurance is protected under insurance coverage by the People's Insurance Company of China (PICC).
An Analysis of High-Performance Drivetrain Friction Modifiers and Extreme Pressure Technologies.
Modern commercial differentials endure heavy cargo loads and sudden torque spikes. Diff oil additives utilize sulfur-phosphorus chemistry to form a sacrificial tribofilm, preventing micro-pitting and gear welding under boundary lubrication conditions.
High-operating temperatures in commercial fleet differentials accelerate oil breakdown. Our additive formulations integrate advanced antioxidants that prolong fluid life, mitigate sludge buildup, and maintain viscosity indexes under thermal stress.
Limited-slip differentials (LSD) require carefully balanced friction coefficients to prevent chatter and noise. Our specialized friction modifiers calibrate the slip behavior of clutch plates to ensure quiet operation and smooth power transfer.
How our Zibo manufacturing base provides global supply chain reliability through high-capacity, precision-engineered processes.
Longhai Technology operates a 131-acre manufacturing center equipped with fully automated metering-fill production lines. This hardware maintains a strict filling accuracy margin of 1‰ to 2‰. By deploying high-throughput machinery, we have increased standard filling speeds by 20% to 35%, ensuring short delivery times for large-scale export orders.
Innovation is the core engine of our business. We reinvest over 5% of our annual revenue into our laboratories. Collaborative research programs with recognized Chinese universities and international testing facilities allow us to design highly targeted additive formulations that meet or exceed ASTM, API, and ACEA requirements.
Through our comprehensive network, we distribute high-tier lubricants across 139 cities spanning 29 provinces, municipalities, and autonomous regions in China. Our strategic proximity to major export ports allows us to seamlessly distribute bulk additives and packaged gear oils to global markets.
We recognize that different drivetrain setups require customized additive treat rates. Our factory offers full OEM and ODM customization services for specialized gear oil additive packages.
Ensuring compliance with international lubricant standards and automotive industry demands.
Our company is fully certified under ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 / 18001 (Occupational Health & Safety).
Additionally, our automatic transmission lubricants carry certifications from major global vehicle manufacturers, including Mercedes-Benz, validating that our products maintain stable film strength and shear stability in demanding real-world conditions.
Analyzing key real-world operating environments and our long-term formulation development goals.
In sub-zero temperatures, differential fluids must maintain proper cold-cranking viscosity to prevent dry starts. In hot conditions, they must prevent film rupture. Our formulations are balanced for wide-temperature operation.
Mining planetary hubs operate under extreme pressures. Our phosphorus-based extreme pressure additives provide surface protection to mitigate shock-load wear on gear teeth.
Electric vehicle differentials encounter higher input speeds and integration with electric motors. Our future R&D focuses on developing additives with specialized dielectric properties, copper corrosion resistance, and high thermal transfer.
A structured workflow designed to ensure smooth collaboration from initial development to delivery.
Evaluating base oil parameters and required API/OEM performance ratings.
Custom blending in our laboratory to optimize anti-wear and friction performance.
Bench testing and viscosity evaluation under extreme operating pressures.
High-volume blending, automated filling, and secure international packing.
Ongoing quality tracking, regulatory documentation, and formula optimization.
Technical answers to common questions about differential oil additives and global supply configurations.
High-performance hydraulic fluids, premium gasoline engine lubricants, refrigeration oils, and extreme duty gear lubricants.
Longhai
