Engineered for extreme performance and equipment longevity.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a titan in the high-tech lubricant sector. For over 15 years, we have mastered the art of "Information Gain" in the lubrication industry, building an end-to-end industrial chain that supports global industrial and transportation demands.
Our core brands, "Century Longhai" and the internationally acclaimed "A Ba" series, represent our commitment to technical expertise and authoritative quality. Insured by PICC (China People's Insurance Company), our products provide more than just lubrication—they provide unshakeable operational security.
A Technical Whitepaper for Wholesale Buyers and Engineers
Modern manual transmissions are evolving toward lower viscosity oils (e.g., 75W-80) to reduce internal friction. This shift enhances fuel economy by up to 2% while maintaining critical shear stability at high temperatures.
Unlike axle oils, manual gearbox oil must balance Extreme Pressure (EP) protection with precise friction coefficients for synchronizers made of brass, molybdenum, or carbon. Longhai’s formulations prevent "grinding" while ensuring gear durability.
The rise of E-axles in hybrid manual systems demands high dielectric properties and copper corrosion protection. We are already developing the next generation of "E-Fluid" manual lubricants.
For global wholesalers, procuring manual gearbox oil is not just about price—it's about Total Cost of Ownership (TCO) and supply chain resilience. Shandong Longhai addresses these macro challenges through:
We utilize precision filling lines with 1‰-2‰ accuracy, increasing speed by 35% over traditional methods. Our location in Zibo allows for streamlined transport to major ports, reducing lead times for international distributors.
Whether you require oils for the extreme cold of Siberia or the intense heat of the Middle East, our lab develops bespoke additives packages (API GL-4, GL-5, MT-1) to match your local market requirements.
Navigating REACH, GHS, and local environmental standards is complex. Longhai provides full SDS (Safety Data Sheets) and technical documentation to ensure smooth customs clearance in every territory.
Innovating at the molecular level for the machines of tomorrow.
Researching sustainable base oils derived from renewable sources to meet the global demand for "Green Procurement."
Utilizing nano-particles to repair micro-pitting on gear surfaces in real-time, extending gearbox life by up to 50%.
Developing oils with chemical markers that interface with IoT sensors to predict oil degradation before failure occurs.
Our commitment to E-E-A-T (Experience, Expertise, Authoritativeness, and Trustworthiness) is reflected in our localized service strategy. We don't just ship oil; we provide a complete technical ecosystem.
Common questions from global wholesale partners and procurement officers.
GL-4 is typically for manual transmissions with synchronizers, as it contains less sulfur-phosphorus additives that can corrode yellow metals. GL-5 is designed for high-offset hypoid gears (axles) but can be too aggressive for some manual gearboxes unless specifically formulated to be "MT-1" compatible.
We utilize fully automatic blending systems and precision metering filling equipment. Every batch undergoes rigorous testing in our 131-acre production base's laboratory, ensuring 100% adherence to the agreed-upon formula specifications.
Yes. Our R&D team (which receives 5% of our annual revenue) specializes in tailoring viscosity index and pour point depressants to ensure optimal performance in both arctic and tropical environments.
With an annual capacity of 200,000 tons and intelligent production lines, we typically process bulk wholesale orders within 15-25 days, depending on custom packaging and labeling requirements.
Complete protection for every component of your fleet or industrial plant.
At Shandong Longhai, products are character, and quality is life. We are ready to work with global partners to lubricate the future together.
Our management policy: "planning big strategies, focusing on technology, creating high quality, and keeping reputation." We strive to implement talent-driven factories and optimize global management.
Longhai
