Explore our top-tier heavy-duty diesel oils, industrial gear oils, and specialized automotive solutions engineered for maximum machinery protection.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a premier high-tech enterprise integrating R&D, production, and international sales. With over 15 years of industry depth, we maintain a complete industrial chain system dedicated to providing premium lubrication solutions for global industrial and transport operations.
Longhai Technology manages its flagship brand "Century Longhai" alongside the strategic international brand British "A Ba" series. Our expansive portfolio includes heavy-duty diesel engine oils, gasoline engine oils, gear oils, hydraulic transmission fluids, anti-wear hydraulic oils, special machinery lubricants, natural gas engine oils, and fully synthetic variants. To guarantee maximum client security, all products are backed and insured by PICC (People's Insurance Company of China).
Navigating structural transitions in heavy duty equipment performance, emissions compliance, and high-efficiency formulations.
The global heavy-duty logistics and transit sectors are shifting toward low-viscosity solutions (e.g., 5W-30 and 10W-30 API CK-4 / FA-4 formulations) to reduce hydrodynamic drag within modern high-power diesel engines. This structural transition balances crucial fuel economy gains with necessary High-Temperature High-Shear (HTHS) protection levels, preventing film breakdown under heavy thermodynamic strain.
Modern diesel powerplants utilizing high-rate Exhaust Gas Recirculation (EGR) and Diesel Particulate Filters (DPF) generate intense soot levels. Standard oils degrade quickly, causing viscosity spikes and abrasive wear. Premium heavy-duty formulations combat this with advanced ashless dispersants, suspending soot particles to prevent agglomeration and preserve oil flow.
Global logistics demand longer drain intervals (ODI) to reduce downtime and operational costs. Our synthetic lubricants offer superior oxidation stability, enduring continuous high thermal stress to minimize deposit formation on turbocharger bearings and piston crowns over extended cycles.
Optimizing heavy-duty lubricants for diverse real-world operations, challenging temperatures, and severe mechanical loads.
In high-dust, high-shock mining environments like those in South America and Western Australia, equipment faces heavy bearing wear and fine particulate intrusion. Our diesel formulations feature high shear stability index (SSI) polymers that maintain a thick protective oil film, resisting abrasive wear from dust leaks.
Long-haul logistics fleets across North America and Europe demand lubricants that prevent piston ring sticking and minimize ash accumulation in exhaust filters. Our Low-SAPS (Sulfated Ash, Phosphorus, and Sulfur) synthetic formulations preserve DPF catalytic efficiency and keep emissions compliant.
Agricultural fleets experience intermittent operation and high humidity, exposing engines to internal condensation and rust. Our formulations include advanced corrosion inhibitors and high reserve alkalinity (TBN) to neutralize acidic byproducts, protecting components during seasonal storage.
For operations in regions like Northern Europe and Central Asia, oils must remain fluid at temperatures below -40°C. Longhai’s synthetic bases deliver excellent low-temperature pumpability, allowing fast cold starts and immediate oil flow to critical valve train elements.
Longhai Technology operates an advanced 131-acre production facility in Zibo, Shandong's industrial hub, boasting an annual capacity of 200,000 tons. Our proximity to key chemical suppliers and Shandong's massive petrochemical infrastructure ensures consistent raw material access, stabilizing production costs and securing lead times for global clients.
Our facility features modern automated blending infrastructure alongside precision metering filling systems. These lines guarantee filling accuracy tolerances of 1‰ to 2‰ while improving throughput speeds by 20% to 35%. This high-efficiency production enables rapid international delivery, ensuring every batch meets strict performance specifications before leaving the factory.
Leading the transition toward advanced synthetic bases, nano-additives, and eco-friendly formulations.
We are incorporating GTL base stocks synthesized from natural gas, delivering extreme paraffinic purity, high viscosity indexes, and low volatility compared to traditional crude oil refining. GTL provides superb oxidation resistance for extreme operating conditions.
Our R&D team is integrating nano-structured tungsten disulfide (WS2) and graphene derivatives into heavy-duty formulations. These materials form a high-strength tribofilm on metal surfaces, cutting friction coefficients by up to 25% and protecting engines during severe load transitions.
To support corporate environmental goals, we are expanding our synthetic ester base options for marine and sensitive industrial applications, ensuring fast biodegradation in soil and water systems without compromising wear protection.
Tailored formulations developed to meet regional climates, operating demands, and specific international standards.
Analyzing fleet demands, regional climates, and target standards.
Custom additive balancing with premium API Group II/III base oils.
Rigorous testing for shear stability, TBN, and volatility.
High-speed automated blending and precision filling.
Full global documentation, SDS sheets, and shipping clearance.
Fully compliant with global quality, safety, and environmental standards, ensuring reliable lubrication quality.
Longhai Lubrication Technology operates under strict quality guidelines, carrying ISO 9001-2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health and Safety) certifications. Our automated transmission fluids hold formal Mercedes-Benz approvals, verifying performance in heavy-duty European drivetrains.
All raw material processing and product blending are managed by dynamic QC protocols, utilizing ASTM-certified lab equipment to check viscosity indexes, cold-cranking simulator (CCS) limits, and shear retention metrics on every batch.
Get professional insights into lubricant performance, API standards, and custom formulations.
API CK-4 lubricants offer improved oxidation resistance, shear stability, and aeration control compared to CJ-4 formulations. These improvements help maintain oil viscosity under high operating temperatures, reducing engine wear and deposit buildup. CK-4 oils are also backward compatible, making them suitable for older diesel engines requiring CJ-4 specifications.
TBN measures a lubricant's ability to neutralize acidic compounds generated during fuel combustion. If an oil's TBN drops too low, these acids can corrode bearings and engine components. Maintaining good TBN retention is essential for extending drain intervals, especially when operating with fuels of varying sulfur content.
We combine advanced blending controls with modern raw material testing. Our fully automated mixing systems precisely monitor base oil and additive inputs, while our QC lab tests every batch for kinematic viscosity, shear stability, and CCS viscosity before packaging, ensuring reliable quality for international shipments.
Yes. Our engineering team can adjust formulations to handle specific environmental challenges. We can lower pour points using high-grade synthetic base stocks for extremely cold regions, or select high-viscosity index base oils and polymers to prevent wear in hot, dusty climates.
Yes. Our CJ-4 and CK-4 formulations feature Low-SAPS technology, limiting sulfated ash, phosphorus, and sulfur levels. This composition helps prevent catalyst poisoning in Selective Catalytic Reduction (SCR) systems and limits particulate buildup in Diesel Particulate Filters (DPF).
Explore our industrial-grade gear oils, hydraulic fluids, and synthetic gasoline engine oils designed for heavy-duty commercial service.
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