Founded in 2009 in the industrial heartland of Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. has established itself as an authoritative leader in chemical formulation and industrial blending. Over more than 15 years of continuous research and development, we have built a fully integrated industrial ecosystem designed to engineer next-generation lubricants for complex drivetrains, combustion engines, and demanding industrial machinery.
Our proprietary brand, "Century Longhai", along with our strategic international partnership brand, the British "A Ba" series, represent the pinnacle of tribological research. From heavy-duty diesel engines to high-speed automotive transaxles, our solutions are fully certified and backed by comprehensive product liability insurance through the People’s Insurance Company of China (PICC), guaranteeing absolute operational security for our worldwide distribution partners.
In modern automotive architecture, the differential is subjected to extreme torque fluctuations, high shear stress, and demanding thermal cycles. The shift toward higher torque densities—both in commercial heavy-duty trucks and high-performance battery electric vehicles (BEVs)—has pushed traditional mineral-based gear oils beyond their physical limits. Today's differential fluids must perform under a wider range of temperatures while minimizing viscous drag to meet stringent global carbon emission mandates.
Our formulations utilize highly advanced sulfur-phosphorus additive packages. Under extreme pressure conditions, these surface-active agents react endothermically to form a sacrificial microscopic tribofilm. This protective layer prevents direct metal-to-metal contact on hypoid gear teeth, arresting adhesive wear, micro-pitting, and catastrophic gear tooth failure under shock loads.
High operating temperatures accelerate lubricant oxidation, leading to sludge formation and acidic corrosion. Longhai's fully synthetic differential fluids utilize Group IV PAO (Polyalphaolefin) and custom Group V synthetic ester base stocks. These structures possess high inherent viscosity indexes (VI), retaining film thickness at 150°C while maintaining exceptional fluid mobility down to -40°C.
As electric drivetrains integrate the electric motor directly with the reduction gear and differential, the fluid must now perform dual roles: high-load gear lubrication and direct thermal management of the motor windings. Our engineering pipeline includes low-viscosity, high-dielectric-strength fluids optimized to cool copper coils while preventing copper corrosion and material degradation in electrified drivetrains.
Conventional viscosity index improvers (VII) shear down permanently under the intense mechanical stress of intermeshing gears, lowering operating viscosity and risking boundary lubrication failure. Longhai utilizes high-molecular-weight polymers with a low Shear Stability Index, guaranteeing that the fluid stays in-grade throughout its entire drain interval.
Engineered fully synthetic, semi-synthetic, and premium mineral gear lubricants custom-tailored to regional climates, operational loads, and OEM specifications (e.g., API GL-5, SAE J2360).
Our fully automated lines fill containers from 1L bottles to 200L drums, utilizing metering-filling techniques that ensure accuracy within 1‰ to 2‰ with zero cross-contamination.
Products are developed and tested to ensure compliance with European, American, and Asian automotive and machinery standards, complete with comprehensive safety datasheets (SDS).
We provide full-service support: customized labels, artwork creation, technical documentation, and product certifications to accelerate your market launch.
By investing over 5% of annual revenue into tribology research, we maintain state-of-the-art facilities equipped with computerized automatic batching and blending control systems. Our modern production layout allows us to shift production profiles seamlessly between industrial lubricants, transmission fluids, and custom-blended differential oils.
Longhai operates under strict compliance with global quality, environmental, and occupational health systems. Our adherence to IATF 16949-grade quality controls and official Mercedes-Benz certifications guarantees that our lubricants meet the demanding requirements of leading global automotive and heavy machinery OEMs.
Technical Consulting
Evaluating mechanical loads, shear parameters & temperatures.
Formulation Design
Selecting optimal PAO/Ester bases & additive structures.
Lab Testing & Approval
Four-ball wear, viscosity indexes, oxidation, and shear tests.
Controlled Production
Homogeneous blending, high-precision batch filling, & sealing.
Logistics & Support
Sea/rail container shipping with complete customs & SDS support.
Through strategic alliances with industry-leading academic institutions and international additives developers, our central laboratory continuously tests, evaluates, and refines complex tribological systems to exceed API and OEM parameters.
The global transmission and axle lubricant market is undergoing a major evolution. Requirements are moving toward lower viscosities (e.g., SAE 75W-80 and 75W-85) to reduce viscous churn losses without sacrificing the high-load tooth protection traditionally provided by SAE 80W-90 and 85W-140 fluids. This transition requires advanced synthetic base oils and chemical additives that maintain micro-pitting resistance under high shear and temperature extremes.
Industrial distributors, fleet operations, and parts importers face the challenge of sourcing lubricants that guarantee long equipment lifespans while lowering maintenance overhead. The demand is for dual-certified gear lubricants (such as API GL-5 / MT-1) that show exceptional demulsibility, foam prevention, seal compatibility, and rust prevention in high-humidity climates.
At Longhai, we are focused on carbon footprint reduction across the product lifecycle. By incorporating highly biodegradable synthetic esters and developing extended-drain gear oils, we help logistics operators and industrial fleets reduce waste oil generation by up to 50%, while improving vehicle fuel economy by 1.5% to 3% through reduced frictional drag.
Phase 1: EV Drivetrain Integration (Current): Fine-tuning direct-cooled e-axle fluids with excellent thermal conductivity, low viscosity (KV100 < 5.0 cSt), and superior copper compatibility.
Phase 2: Ultra-Low Viscosity Heavy Duty Axle Oils (In Progress): Engineering synthetic SAE 72.5W fluids that protect heavy commercial axles under extreme pressure while reducing fuel consumption.
Phase 3: Self-Healing Nanotech Additives (Under Lab Testing): Developing functionalized nano-material additives that deposit on micro-cracks on gear surfaces to dynamically heal surface imperfections.
Whether you require customized packaging design, bulk OEM formulations, or specialized certifications for your regional market, Shandong Longhai Lubrication Technology provides complete solutions from formulation design to final delivery.
Providing advanced tribology engineering and custom blending solutions worldwide.
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