Explore our elite selection of high-performance transmission and engine oils formulated under strict ISO specifications.
Established in 2009 and headquartered in Zibo, Shandong—a major industrial and petrochemical hub in China—Shandong Longhai Lubrication Technology Development Co., Ltd. is a premier high-tech enterprise integrating research and development, production, and international trade. For more than 15 years, our company has dedicated itself to refining the chemical properties of industrial and automotive lubricants, securing a complete supply chain network.
Under our domestic signature brand "Century Longhai" and the British international strategic brand "A Ba", we provide a diverse chemical portfolio. Our offerings include heavy-duty diesel engine oil, high-performance gasoline engine oil, specialized differential fluid, industrial gear oil, hydraulic transmission fluid, anti-wear hydraulic oil, and engineering machinery fluids. To guarantee commercial confidence, all our products are fully backed by PICC China People's Insurance Company quality underwriting.
Why sourcing your differential fluids and industrial lubricants from Zibo, Shandong provides unmatched competitive advantages.
Our manufacturing complex spans over 131 acres, supporting an annual output capacity of 200,000 tons of premium lubricants. This infrastructure enables us to maintain extensive raw material reserves and guarantee short lead times, even for massive bulk orders.
Equipped with fully automated, intelligent blending and filling lines. The high-precision volumetric metering system achieves a filling accuracy of 0.1% to 0.2%. This technological configuration increases the filling speed by 20% to 35%, ensuring zero-defect batch delivery.
Based in Zibo, we sit in close proximity to major petrochemical refineries, which stabilizes our base oil procurement. Furthermore, our efficient transport links to Qingdao Port mean international distributors benefit from reduced domestic transport costs and rapid container shipping schedules.
Longhai Technology invests over 5% of its annual revenue back into internal laboratories and collaborative research with chemical science institutions. This R&D dedication ensures that our differential fluids maintain extreme shear-stability and anti-foaming characteristics. By sourcing from us, global enterprises obtain factory-direct prices alongside state-of-the-art lubricant technologies that extend differential gear life under high load conditions.
An authoritative guide to understanding tribological properties, viscosity indices, and modern performance standards.
Differentials distribute engine torque to the drive wheels, allowing them to rotate at different speeds during cornering. This operation creates high-pressure sliding contacts along hypoid gear teeth. Without a highly specialized differential fluid containing Extreme Pressure (EP) additives, these gears would suffer micro-welding, pitting, and catastrophic structural failure. Our formulations utilize advanced sulfur-phosphorus additives to establish a resilient chemical boundary layer that resists gear scoring under extreme mechanical shock loads.
A reliable differential fluid must maintain its structural integrity across extreme temperatures. In sub-zero winter environments, the fluid must remain flowable to prevent dry-start wear (measured via low-temperature Brookfield viscosity). Under summer operations or heavy haulage, where differential temperatures can exceed 130°C, the fluid must retain a sufficiently thick hydrodynamic film. Longhai utilizes high-viscosity index (VI) base oils combined with shear-stable polymer viscosity modifiers, ensuring our fluid does not permanently thin out under heavy shear forces.
It is vital for procurement managers to understand the distinction between classifications. API GL-4 gear oils are designed for moderate conditions and manual transaxles containing yellow metals (like brass synchronizers). API GL-5 fluids contain roughly double the concentration of EP additives to withstand the severe sliding forces inherent in hypoid gears. Using a GL-4 fluid in a hypoid differential leads to rapid gear wear, while using GL-5 in manual transmissions without checking compatibility can cause chemical corrosion of copper-alloy synchronizers. Shandong Longhai manufactures highly optimized fluids tailored strictly to each standard to prevent cross-application failure.
To guarantee absolute batch consistency and reliability, our plant implements strict multi-phase quality inspections. Shandong Longhai has successfully achieved and maintains key international system certifications:
These credentials guarantee that every batch exported to European, North American, and Asia-Pacific markets adheres to strict environmental standards and safety compliance protocols.
We collaborate with global distributors, machinery OEMs, and fleet operators to formulate custom products tailormade for distinct operational environments.
We modify specific properties such as low-temperature Brookfield viscosity, high-temperature kinematic viscosity, sulfur-phosphorus ratio, and synthetic base oil content (Group II, Group III, or PAO synthetic) to match your vehicle configurations, local climatic parameters, or regional brand positioning.
Our lab technicians provide third-party validation and run exhaustive ASTM tests to ensure your custom gear or engine oil meets international API, ACEA, and specific OEM specifications.
Navigating import regulations, safety documentation, and local environmental standards seamlessly.
We compile complete Safety Data Sheets (SDS) in accordance with the Globally Harmonized System (GHS) and provide REACH compliance documentation to facilitate smooth imports into the EU and North American jurisdictions.
From 1-liter plastic bottles to 200-liter steel drums and massive IBC totes, our packagings are optimized with secure seal systems and UV-resistant materials to prevent degradation and leaks during maritime transit.
Our sales support team features specialized tribology consultants who assist our clients with oil analysis, product conversion guides, and localized marketing materials to help grow their local market share.
Adapting to evolving global machinery requirements and new energy vehicle (NEV) axle demands.
Our lubricants operate efficiently under the most challenging environments:
The rise of commercial electric vehicles is transforming gear oil requirements. Electric axles operate at high RPMs, demanding fluids with superior cooling properties, compatible dielectric constants, and copper corrosion prevention. Shandong Longhai is actively formulating ultra-low viscosity synthetic fluid solutions to meet the thermal challenges of next-generation integrated electric powertrains.
How we work with global partners from early analysis to ongoing post-purchase technical support.
Evaluating technical demands, target markets, packaging, and regulatory standards.
Adjusting base oil blends and additive packs inside our state-of-the-art laboratory.
Exhaustive ASTM testing, including wear scars, copper corrosion, and shear tests.
High-speed automated packaging, quality checks, and container transport to port.
Ongoing formulation updates, fleet testing assistance, and inventory management support.
An inside look at our blending units, testing apparatus, and physical warehouse capabilities.
Expert technical answers regarding formulations, bulk importing, and international distribution.
Our comprehensive range of heavy-duty industrial oils, hydraulic fluids, and diesel engine formulations.
Guided by our operational philosophy: "Dare to explore, innovate continuously, survive by quality, and promote development by efficiency", we focus on delivering competitive high-grade lubricants to global markets. We drive market value through raw scientific innovation, strict standard compliance, and cost-effective bulk shipping options.
Whether you require customized packaging design, specialized formula variations, or direct factory pricing for bulk container exports, our experienced team stands ready to assist you. Contact Shandong Longhai Lubrication Technology Development Co., Ltd. today to establish a reliable, high-performance supplier partnership.
"Products are character, quality is life, customer first, honest and pragmatic service tenet."
We continue to build partnerships with global distributors, manufacturing plants, and fleet operators. By sharing technical expertise and refining chemical designs, we are setting new benchmarks for heavy-duty transmission fluid supply chains.
Longhai
