Engineered to withstand extreme shear stresses, thermal variations, and demanding loads. Discover our core high-performance lubrication lines.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating research & development, production, and sales. With more than 15 years of industry specialization, the company has developed a complete industrial chain system, providing superior lubrication solutions for global industrial and transportation fields.
Longhai Technology proudly owns the proprietary brand "Century Longhai" alongside the international strategic cooperation brand, British "A Ba" series. Our expansive product portfolio covers diesel engine oil, gasoline engine oil, synthetic gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engine oil for engineering machinery, natural gas engine oil, full synthetic motor oils, automotive urea solutions, antifreeze, motorcycle oils, industrial oils, and automatic transmission oils. To ensure maximum peace of mind, all brands are fully insured under product quality liability policies issued by the PICC China People's Insurance Company.
Uncovering the molecular science and tribological advancements driving the future of high-load industrial machinery.
Modern gearboxes operate under increasingly extreme thermal environments. We leverage Polyalphaolefin (PAO) and high-polarity synthetic esters as base fluids. This structure yields a naturally high Viscosity Index (VI > 160) without shear-unstable viscosity modifiers, ensuring the fluid retains structural integrity across temperature spans from -45°C to 150°C.
Advanced sulfur-phosphorus extreme pressure (EP) additives form a resilient chemisorption boundary film on sliding surfaces. This microscopic barrier significantly minimizes micro-pitting fatigue (flaking), protecting surface roughness profiles and maintaining gear geometry in planetary gearsets operating under highly dynamic stress regimes.
Synthetic bases exhibit lower internal molecular traction compared to mineral oils. By reducing viscous drag and churning losses inside industrial gearboxes, our full synthetic formulation lowers operating temperatures by up to 10°C, translates directly into a 1.5% to 3.0% overall energy efficiency boost, and prolongs seal life.
Looking toward the future, the global transition to high-speed e-mobility and megawatt-class offshore wind installations requires gearboxes to run faster, hotter, and under tighter clearance profiles.山东龙海 is already engineering biodegradable synthetic gear lubricants and low-conductivity fluids tailored for direct contact cooling in electric drivetrain gearboxes.
Standardized solutions are insufficient for specialized machinery. Here is how we resolve heavy-duty operational friction on a macro scale.
Wind turbine planetary gear systems are subjected to highly variable wind speeds, moisture, and extreme loads. Our full synthetic lubricants prevent foaming, offer superior water separation, and provide robust micropitting protection, extending maintenance cycles to over 7 years.
Hot rolling mills and casting lines expose gearboxes to high ambient heat and heavy scale contamination. Our formulations maintain viscosity and prevent oxidation sludge formation, eliminating unplanned downtime under extreme shock loads.
From high-torque commercial trucks to precision-engineered passenger cars, our heavy-duty gear oils and SP/SN engine oils shield critical synchromesh and differential components against sliding wear and boundary friction.
Inside our 131-acre high-tech production base in Zibo, Shandong.
Efficiency and consistent quality are the pillars of the Longhai production philosophy. Our base encompasses over 131 acres with an annual capacity of 200,000 tons. By utilizing fully automated volumetric blending systems, we execute complicated formulations with absolute precision, mitigating the risk of batch-to-batch variation.
Our state-of-the-art filling lines employ advanced weight-control metering valves, ensuring filling accuracy tolerances between 1‰ and 2‰. This system not only guarantees absolute precision but increases packing speed by 20% to 35%, allowing us to fast-track bulk container shipments to international ports on strict schedules.
For global clients seeking tailored chemical attributes, our *Joint Innovation Center* and precision testing laboratories provide rapid prototyping, analyzing critical metrics like Brookfield low-temperature viscosity, FZG damage stages, and copper strip corrosion resistance.
Accelerating product conception to market launch with optimized operational integration.
Fully synthetic and semi-synthetic formulations tailored to equipment mechanical parameters and environmental requirements to meet API, ACEA, and OEM specifications.
Supports small-scale trial runs to large-scale mass production across motor oils, gear oils, hydraulic transmission fluids, and compressor oils.
Certified in ISO 9001:2015, IATF 16949, and environmental systems. We issue detailed laboratory analysis reports for every shipment.
Providing custom package designs, label localization, and full export compliance paperwork support to speed up customs clearance.
Demand Analysis
Formula Development
Sample Testing
Production Delivery
After-Sales Support
Protecting your operations and investments with certified safety and verified global performance standards.
Navigating local chemical regulations is a primary challenge in international procurement. Shandong Longhai Lubrication adheres to international compliance norms. We have obtained certifications in ISO 9001:2015 for quality management, ISO 14001:2015 for environmental responsibility, and ISO 45001:2018 (previously 18001) for occupational health and safety.
Furthermore, our automated transmission fluids hold prestigious manufacturer approvals, including Mercedes-Benz (MB) certifications, ensuring that our products can be directly implemented in critical automotive warranties. Our full synthetic formulations comply with international REACH registration rules and RoHS directives for hazardous materials, paving the way for frictionless entry into European, North American, and Asia-Pacific markets.
To guarantee high quality on site, our logistics teams provide custom packaging ranging from 1L bottles up to 1000L IBC totes, accompanied by multi-lingual SDS (Safety Data Sheets) matching regional language and regulatory requirements.
Why modern industrial enterprises are switching from traditional mineral gear oils to Longhai Synthetic Gear Oils.
Traditional mineral gear oils undergo rapid thermal degradation at temperatures exceeding 80°C, forming acidic oxidation by-products that attack gear teeth. Our full synthetic base chemistry reduces oil changes, extends equipment component service life by up to 300%, and lowers disposal costs.
In cold climate operations, high-pour-point mineral fluids thicken, leading to starvation wear upon startup. Longhai's full synthetics maintain flow properties down to -40°C, ensuring instant oil film setup and preventing gear wear during startup cycles.
Through our Zibo factory cluster and proximity to major shipping hubs, we streamline raw material procurement and international customs documentation, passing these logistics savings directly onto global buyers.
In addition to our "Century Longhai" brand, our collaboration with British "A Ba" brings international tribological engineering standards to your facility, combining global technology with Chinese manufacturing scale.
Direct answers from our senior research chemists and lubrication engineers on synthetic gear oil application and properties.
Answer: PAO (Polyalphaolefin) synthetics feature uniform molecular structures without the paraffinic waxes found in mineral oils. This results in an exceptionally high Viscosity Index (typically >150) and a low pour point (-45°C). In operation, this translates to minimal viscosity thinning under extreme heat and fluid flow at low temperatures, offering constant oil-film thickness and up to 3% energy savings from reduced internal friction.
Answer: Our synthetic gear oils utilize advanced sulfur-phosphorus extreme pressure (EP) additives. When subjected to localized flash temperatures and loads at surface asperities, these additives chemically react to form a sacrificial protective iron sulfide/phosphate tribofilm. This layer prevents metal-to-metal contact, preserving surface profile finish and preventing micro-cracking and subsequent pitting.
Answer: While PAO-based synthetic oils are generally compatible with mineral base oils, mixing them can dilute the performance benefits of the synthetic fluid and affect the stability of the additive package. For optimal system protection, we recommend a complete drain, flush, and refill when transitioning from mineral to full synthetic lubricants.
Answer: We are ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certified. Our automotive lubricants carry Mercedes-Benz manufacturer approvals. All export shipments can be supplied with complete SDS, REACH statements, and detailed analysis reports from our lab.
Answer: Our MOQ varies depending on the specific formulation complexity and packaging size (e.g., 1L, 4L, 18L pails, or 200L drums). Typically, customized branding runs start at 5 to 10 metric tons. We also support pilot test batches for validation before proceeding to full production scale.
Visualizing our precision manufacturing lines and robust quality control laboratories.
Providing custom viscosity profiles and extreme oxidation resistance. Explore our complete selection of industrial lubricants below.
Longhai