Premium lubrication formulations engineered to meet international OEM standards under extreme operating conditions.
A leading high-tech enterprise integrating R&D, production, sales, and global supply of advanced lubrication systems.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. has spent over 15 years building an integrated, precision-focused manufacturing ecosystem. By developing a comprehensive value chain, Longhai has positioned itself as a key partner in the global heavy industrial, machinery, and transportation sectors. Operating under its proprietary brand "Century Longhai" and its strategic international cooperation brand, the British "A Ba" series, the company maintains quality standards backed by underwriting from PICC China People's Insurance Company.
Longhai's advanced product architecture spans a wide array of lubrication categories, including: heavy-duty diesel engine oils, high-performance gasoline engine oils, industrial and automotive gear oils, hydraulic transmission fluids, specialized anti-wear hydraulic oils, engineering machinery engine lubricants, natural gas engine oils, premium full-synthetics, automotive urea solutions, environment-tolerant coolants/antifreeze, motorcycle oils, air compressor oils, and automatic transmission fluids (ATF).
How macroeconomic shifts, manufacturing localization, and high-performance requirements shape the industrial lubricant supply chain.
The global industrial lubricants market is transitioning from simple hydrocarbon-based lubrication to high-tech, synthetically fortified, and environmentally conscious solutions. Driven by high load requirements in automated assembly plants, massive logistics infrastructures, and extreme environment applications, manufacturers require oils with high viscosity indices, shear stability, and oxidative resistance. In this landscape, Chinese industrial oil manufacturers have evolved from low-tier blenders into major R&D hubs, producing synthetic alternatives that compete directly with global majors.
Shandong Longhai Lubrication Technology sits at the center of this transformation. Utilizing advanced Group II and Group III base oils, alongside synthetic PAO (Polyalphaolefin) bases, the company targets wear protection, thermal stability, and carbon emission reductions. Through continuous supply chain optimization and international partnerships, Shandong Longhai ensures that its products comply with stringent standards globally, supplying sectors like marine shipping, large-scale metallurgy, wind energy, and high-speed rail transportation.
A strategic timeline of lubrication science innovation, from mineral optimization to nano-particle additives and carbon-neutral synthetic systems.
Maximizing the efficiency of Group II and Group III base stocks using advanced hydro-processing techniques. Developing multi-functional additive systems with high shear-stable Viscosity Index Improvers (VII) and zinc-free extreme pressure additives. This maintains critical oil film thickness (HTHS) under extreme thermal stresses while minimizing deposits and boundary wear.
Accelerating the transition toward synthetic esters, Polyalkylene Glycols (PAG), and PAO bases for harsh environments. This phase targets high-efficiency industrial refrigeration (HFC/HFO compatible oils) and heavy-duty gear oils (L-CKD) designed to resist micro-pitting, reduce operating temperatures, and protect sensitive components over extended drain intervals.
Integrating carbon nanomaterials, graphene oxides, and nano-silica structures to minimize the friction coefficient within the boundary lubrication regime. Concurrently designing smart lubricants containing chemical tracers compatible with real-time IoT oil condition monitoring sensors. This enables transition from scheduled maintenance to predictive, condition-based lubrication regimes.
Custom-tailored tribological strategies designed to prevent failure, optimize mechanical efficiency, and reduce downtime across core sectors.
Providing high TBN (Total Base Number) retention lubricants (API CH-4, CI-4 Plus, CJ-4, CK-4) to counter corrosive combustion byproducts. These formulations neutralize acids, disperse soot, and prevent ring-sticking in high-displacement diesel engines operating under severe multi-shift cycles.
Specialized anti-wear hydraulic oils containing thermal-tolerant ZDDP (Zinc Dialkydithiophosphate) additives. Engineered to protect high-performance vane, piston, and gear pumps operating above 25 MPa, maintaining film strength under shear stress while resisting oxidation.
Heavy-duty industrial gear oils (L-CKC and L-CKD) optimized for heavy loads. Advanced extreme pressure (EP) additives build a resilient boundary lubricant film, protecting gear teeth against micro-pitting, scuffing, and metal-to-metal contact in heavy industrial drives.
End-to-end custom formulation engineering, rapid prototype development, and high-precision packaging and filling services.
We specialize in designing synthetic, semi-synthetic, and high-performance mineral lubricants custom-tailored to unique equipment profiles, climatic conditions, or regional market regulations. Our manufacturing facility handles both trial-batch runs and large-scale industrial blending across a full array of lubricants.
Formulations matched to API, ACEA, DIN, and ISO standards.
Support for pilot batch runs up to high-volume commercial runs.
Rigorously verified in ISO 9001 and IATF 16949 laboratories.
Bespoke packaging design, labeling, and technical documentation.
Operating in compliance with ISO international standards and certified by leading global automotive manufacturers.
Shandong Longhai Lubrication Technology operates under three core management frameworks: ISO 9001:2015 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. Our products carry official Mercedes-Benz automatic transmission fluid approvals, alongside rigorous testing to satisfy global specifications including API, ACEA, DIN 51517, and Denison HF-0.
A structured, collaborative approach to formulating, validating, and delivering premium lubricants to global markets.
Assessing operating conditions, viscosity requirements, and regulatory standards.
Selecting base oils and balancing additive packages for targeted performance.
Conducting laboratory verification of oxidation, shear stability, and wear metrics.
Executing high-accuracy automated blending and logistics fulfillment.
Providing ongoing tribological testing, field analysis, and oil condition monitoring.
Addressing crucial engineering inquiries regarding lubricant chemistry, performance standards, and maintenance strategies.
The division between L-CKC and L-CKD gear oils is based on their extreme pressure (EP) properties and load-carrying capacity. L-CKC is formulated for medium-load industrial enclosed gearboxes operating under standard conditions. L-CKD heavy-duty gear oils are designed with enhanced anti-wear, anti-corrosion, and extreme-pressure additive systems (primarily sulfur-phosphorus chemistry) to handle high-load, continuous impact environments, and extreme temperatures. L-CKD provides superior micro-pitting resistance and thermal stability compared to L-CKC, protecting gear teeth under harsh conditions.
API CK-4 was introduced to meet stricter emissions standards and handle higher operating temperatures in modern diesel engines. Compared to CJ-4 and CI-4, CK-4 lubricants offer improved shear stability, oxidation resistance, and aeration control. They maintain their viscosity under high shear conditions (better HTHS viscosity retention), protecting engines running on low-sulfur diesel. They are backward compatible, meaning CK-4 can be used in older engines calling for CJ-4 or CI-4, helping to extend drain intervals and improve fuel efficiency.
High-pressure hydraulic systems operating above 20 MPa experience significant fluid shear and temperature variations. A high Viscosity Index (VI) means the oil's viscosity remains stable across a wide temperature range—preventing it from becoming too thin at high operating temperatures or too thick at cold start-up. This maintains a strong lubricating film to protect high-speed pumps and valves from adhesive wear, while preventing internal slippage and energy loss.
Refrigeration oil must be selected based on its chemical compatibility with the refrigerant (e.g., HFCs, HFOs, ammonia, or CO2) and the system's operating temperatures. Key properties include a low pour point and floc point to ensure the oil does not wax or solidify in the evaporator, and high chemical stability to prevent reaction with the refrigerant. For systems using eco-friendly HFC/HFO refrigerants, synthetic polyol ester (POE) or polyalkylene glycol (PAG) lubricants are typically required to maintain solubility and oil return to the compressor.
Our automated filling lines use advanced positive displacement metering pumps and mass flow meters linked to a closed-loop PLC controller. By measuring the mass flow rate of the lubricant rather than its volume, the system compensates for density changes caused by temperature fluctuations. Automatic drip-free nozzles and real-time feedback scales ensure that each container is filled within the 1‰–2‰ accuracy tolerance, reducing waste and maintaining package consistency.
Premium lubrication formulations engineered to meet international OEM standards under extreme operating conditions.
A look at Shandong Longhai's blending facilities, analysis laboratory, and quality control systems.
Longhai