Engineered to exceed critical industrial criteria, ensuring optimal viscosity retention, system compatibility, and wear mitigation under extreme temperatures.
The global demand for high-performance Air Conditioning (AC) compressor lubricants is witnessing an unprecedented transition. Accelerated by the global phase-down of high-GWP (Global Warming Potential) hydrofluorocarbons (HFCs) under the Kigali Amendment, refrigeration and HVAC industries are restructuring their chemical architectures. Consequently, procurement officers and industrial engineering distributors face the complex task of sourcing specialized lubricants compatible with modern systems, such as Polyol Esters (POE), Polyalkylene Glycols (PAG), and Polyalphaolefins (PAO).
These synthetic lubricants are no longer simple off-the-shelf commodities. They are precision-engineered fluids required to exhibit high thermal stability, optimal chemical miscibility with next-generation refrigerants (such as HFOs like R-1234yf, R-32, CO2, and Ammonia), and excellent dielectric resistance for electric vehicle (EV) hermetic compressors. Ensuring reliable global sourcing channels requires manufacturers capable of scaling production while maintaining strict compliance with international purity standards.
Optimal miscibility parameters ensure oil return in low-temperature evaporators, preventing oil log and optimizing heat transfer efficiency across commercial chillers.
Specially developed ester formulations resist hydrolytic degradation under traces of moisture, preventing acid accumulation and subsequent copper plating.
Ultra-dry formulations custom-synthesized for automotive hermetic scroll compressors in electric vehicles, eliminating electric arc leakage hazards.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a recognized high-tech enterprise integrating research, development, synthesis, and distribution. With over 15 years of industry excellence, we possess a complete upstream-to-downstream industrial system designed to deliver precise lubrication solutions across the global transport and industrial sectors.
Under our proprietary brand "Century Longhai" alongside our international strategic partner brand, the British "A Ba" series, we deliver an expansive portfolio. This range spans diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engineering machinery fluids, automatic transmission oil, and synthetic compressor lubricants. Each batch is backed by comprehensive quality assurance policies insured under the PICC China People's Insurance Company.
From deep-freeze logistics networks to commercial multi-evaporator systems, our custom engineering ensures continuous operations and reduced carbon footprints.
Large-scale centrifugal and screw compressors in ammonia or hydrocarbon cooling plants demand high-viscosity synthetic oils. We formulate specialized PAO and Alkylbenzene (AB) fluids that show low gas solubility, maintaining hydrodynamic lubrication film thick enough to prevent rotor fatigue under immense pressures.
Multi-split VRF systems operate across volatile thermal ranges. Our high-viscosity-index POE oils guarantee seamless lubrication during start-up cycles and prevent copper plating inside narrow expansion valve orifices, ensuring uninterrupted comfort control.
For modern combustion vehicles utilizing R134a and electric cars adopting R1234yf refrigerants, our premium PAG lubricants offer unmatched chemical resistance, low hygroscopicity, and superior wear protection for scroll and piston compressors.
The modern refrigeration landscape requires lubricants that dynamically adapt to chemical changes. Our R&D pipeline focuses heavily on molecular restructuring of synthetic esters to enhance miscibility limits with carbon dioxide (R-744) and low-GWP hydrofluoroolefins (HFOs).
Integrating surface-functionalized nanoparticles to establish a protective tribofilm on metal contacts, minimizing frictional drag by up to 15% and increasing overall compressor life cycle.
Synthesizing environmentally benign esters derived from renewable feeds, allowing outdoor agricultural and maritime refrigeration plants to operate with zero soil pollution risk.
Formulating lubricants that maintain physical properties at pressures exceeding 120 Bar in trans-critical CO2 refrigeration cycles, avoiding localized structural shear failure.
Operating with precision blending machinery and automated high-speed packaging lines to deliver uncompromised quality on time, every time.
Longhai Lubrication Technology allocates over 5% of annual revenues directly to R&D. By maintaining strategic technical alliances with top universities and materials-science institutes, we continuously refine our product line. Our manufacturing facility spans over 131 acres, achieving an annual manufacturing output capacity of 200,000 tons.
Our blending facility integrates high-precision, automatic volumetric batching units. The filling processes utilize mass-flow metering technologies that guarantee 1‰ to 2‰ accuracy. This smart plant automation increases overall filling speed by 20% to 35%, allowing us to maintain rapid delivery timelines even for custom, large-volume export batches.
Partnering with compressor OEMs and global private labels to deliver tailored viscosity grades, base oil blends, and specialized anti-wear package additives.
Modifying PAG or POE structures to hit precise viscosity points (ISO VG 32, 46, 68, 100) aligned with system design requirements.
Supporting pilot test batches for product validation and scaling up smoothly to large industrial-volume shipments.
We provide full laboratory test data sheets, safety documentation (SDS), and global chemical regulation certificates (REACH/RoHS).
Complete product design support including metal drums, plastic containers, custom branding graphics, and logistics-ready packaging.
Transparent processes ensuring consistent, certified formulation delivery from initial brief to global distribution.
Identifying system requirements, target operating ranges, and compatibility parameters.
Synthesizing and custom-blending base oil structures alongside selected additive packs in our research lab.
Running tribological wear tests, miscibility tests, and moisture stability verification.
Automated high-precision blending and packing, backed by strict batch quality control.
Organizing customs clearance, safe shipping containment, and long-term tech support.
Our operations prioritize stable quality and clean manufacturing. We hold certifications under ISO 9001:2015 for quality systems, ISO 14001:2015 for environmental protection, and ISO 45001:2018 for occupational health. Additionally, our automatic transmission products carry direct Mercedes-Benz approvals, testifying to our technical standing.
By blending imported formulation practices with automated laboratory equipment, we check each batch of oil for water content, dielectric property, flash point, viscosity drift, and total acid number (TAN). This ensures that every container leaving our factory performs reliably under the most demanding conditions.
Technical insights on AC compressor lubricant compatibility, shipping processes, and customized formulation development.
Extended formulations covering heavy gearboxes, industrial hydraulic networks, transport refrigeration, and passenger motor vehicles.
Longhai