Engineered to exceed OEM expectations under critical temperatures and thermodynamic loads
In modern industrial refrigeration and automotive thermal management systems, the performance of the air conditioning (AC) compressor depends heavily on the compatibility and structural integrity of the compressor lubricant. As the industry shifts towards next-generation eco-friendly refrigerants such as R134a, R1234yf, R32, R410A, and CO2 (R744), the tribological interfaces within compressors require highly sophisticated synthetic lubricant formulations. These fluids must resist thermal breakdown, prevent acid formation, maintain optimal miscibility parameters, and minimize oil carry-over into the heat exchangers.
Shandong Longhai Lubrication Technology Development Co., Ltd., established in 2009 and headquartered in the high-tech industrial zone of Zibo, Shandong, stands at the forefront of this industrial transition. For over 15 years, we have worked to solve critical lubrication issues, providing advanced solutions under our flagship brand "Century Longhai" and our strategic international brand line British "A Ba". Our product array stretches across specialized refrigeration oils, high-performance automotive lubricants, industrial gear oils, turbine fluids, and bespoke synthetic compositions designed for extreme operating environments.
Providing high-stability formulations to prevent system wear and extend service life
Engineered to work efficiently with modern refrigerants (HFC, HFO, and CO2). Formulated to balance chemical miscibility and viscosity retention across high-temp condenser outputs and sub-zero evaporator loops.
Formulated with advanced moisture-scavenging additives. Our oils resist degradation, acid creation, and copper plating in hermetic systems where thermal stress exceeds 150°C.
Features micro-additives that form a thin, high-strength boundary layer on sliding surfaces, protecting critical moving parts like swash plates, scroll flanks, and pistons.
In the global supply chain, industrial and automotive buyers require a reliable combination of technical accuracy, scale, and cost-efficiency. Shandong Longhai's modern plant in Shandong, China, delivers on these needs through the following advantages:
Modern compressor systems require careful matching between the refrigerant type and the lubricant's chemical structure. Using the wrong oil can lead to phase separation, high wear, or motor burnout in hermetic systems. Below is a comparison of key base oils:
Our lubricants are engineered to perform across diverse industrial and transport sectors:
From initial design to final packaging—delivering custom solutions that meet global standards
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A look inside our certified testing facilities and manufacturing environment in Shandong
Answers to common questions regarding formulation compatibility, storage, and procurement
PAG (Polyalkylene Glycol) is primarily used in automotive air conditioning systems running on R134a or R1234yf refrigerants. PAG is highly miscible with these systems but is also very hygroscopic. POE (Polyol Ester) is widely used in stationary refrigeration, commercial HVAC, and systems with HFCs/HFOs. It has high thermal stability and good electrical insulation, making it the choice for hermetic and semi-hermetic compressors.
Synthetic lubricants, especially POEs, are highly hygroscopic. We use nitrogen blanketing across our storage, blending, and filling processes to keep moisture levels below 50 ppm (parts per million). Every batch is tested using Karl Fischer titration to confirm it meets strict quality limits before shipping.
Yes. Our laboratory can formulate lubricants to match specific kinematic viscosity indexes (at both 40°C and 100°C). We work closely with OEM design engineers to adjust anti-wear packages, pour points, and foaming behavior to match specific compressor types.
Our company has passed ISO-9001-2015 quality system certification, 14001 environmental management system certification, and 18001 health management system certification. We also hold official Mercedes-Benz approvals, confirming the high quality and performance of our formulations under demanding conditions.
In sealed containers stored in dry, temperature-controlled environments, our synthetic oils maintain their properties for up to 3 to 5 years. Once opened, containers should be sealed tightly and used quickly to prevent moisture absorption from the air.
Advanced fluids designed for high load capacities and long-term wear protection
Longhai