Engineered to meet the exact requirements of high-capacity compressor systems and extreme-temperature industrial settings.
In contemporary industrial refrigeration and climate control, the interaction between refrigerants and compressor oils determines system life cycle, efficiency, and reliability. High-grade refrigeration oils must demonstrate impeccable thermal stability, low-temperature fluidity, and optimum solubility with traditional HFCs as well as next-generation low-GWP refrigerants (CO2, Ammonia, and HFOs).
As global environmental regulations tighten under the Kigali Amendment, procurement managers and engineering executives require lubrication partners who not only supply bulk chemical agents but also design proprietary synthetic formulations that prevent oil carryover, foaming, and wax precipitation in evaporators.
Shandong Longhai Lubrication Technology Development Co., Ltd., leverages over 15 years of industry excellence to pioneer high-tech formulations, delivering top-grade refrigeration oil solutions designed to resist viscosity shear breakdown and maximize heat-exchange efficiency globally.
Empowering global enterprises with a robust manufacturing base, precision compounding technology, and direct export infrastructure.
Our automated production lines operate using high-precision metering devices, ensuring filling accuracy to within 1‰ to 2‰. By increasing operating speeds by 20% to 35%, we guarantee consistent packaging, minimized product variance, and rapid container load-out for bulk export shipments.
From viscosity matching (ISO VG 32 to 220) to base stock selection (Mineral, POE, PAG, AB), we formulate refrigeration oils customized for specific evaporator working climates, refrigerant interactions, and extreme compressor load parameters.
Shandong Longhai holds certified clearances for ISO 9001:2015 Quality Management, ISO 14001 Environmental Protection, and ISO 18001 Occupational Health systems. Our automotive transmission fluids also hold prestigious Mercedes-Benz OEM approvals.
Tested under extreme working profiles to ensure maximum reliability, chemical compatibility, and anti-wear protection.
Ultra-low temperature storage facilities require refrigeration oils that maintain excellent fluidity and wax-free performance in evaporators. Our synthetic POE and AB oils prevent phase separation and oil gelation down to -50°C, securing system coefficient of performance (COP).
Large commercial chillers run continuously under variable loads. Our formulation technology provides excellent shear stability and low-foaming properties in screw and centrifugal compressors, reducing friction losses and extending compressor service intervals.
Maritime installations demand robust rust resistance and chemical inertness against moisture contamination. Shandong Longhai's strategic formulation ensures strong metal surface adhesion, preventing moisture-induced corrosion on critical pump bearings.
A systematic, quality-focused development path from molecular design to international product delivery.
Evaluating compressor profiles, working temperatures, refrigerant type, and regulatory restrictions.
Custom matching of base oils (POE, PAG, Mineral) and additive packages in our state-of-the-art laboratory.
Verifying viscocimetric parameters, chemical stability, pour point, and compatibility with target elastomer seals.
Blending and precision packaging on our 200,000-ton capacity line with full quality certificate compliance.
Crucial answers from our engineering division regarding fluid compatibility, thermal degradation, and sourcing parameters.
Polyol Esters (POE) are predominantly paired with HFC refrigerants (such as R134a, R404A, R410A) in commercial HVAC and residential AC systems. Polyalkylene Glycols (PAG) are highly polar and primarily utilized in automotive air conditioning systems operating on R134a or R1234yf. PAGs exhibit high hygroscopicity compared to POEs but provide excellent lubrication and stability under extreme temperature differentials in automotive cooling loops.
Moisture is highly detrimental to refrigeration loops, especially in synthetic ester-based systems (POE). Synthetic oils are hydrolytically unstable in the presence of water; moisture triggers hydrolysis, decomposing the oil back into its organic acids. These acids degrade compressor motor insulation, cause copper plating on bearings, and block capillary tubes with sludge. Shandong Longhai enforces strict sealing protocols to maintain low moisture levels in all supplied oils.
Yes, mineral refrigeration oils (typically naphthenic-based due to their low pour point characteristics) are widely compatible with HCFC and CFC refrigerants such as R22 and R12. They are also suitable for natural refrigerants like Ammonia (R717) where oil-refrigerant immiscibility is required. However, for HFC systems, synthetic POE, PAG, or Alkylbenzene (AB) lubricants must be used to ensure proper miscibility and oil return to the compressor.
Our modern production plant in Zibo, Shandong utilizes fully automated blending systems coupled with an advanced QC laboratory. We perform batch testing for key parameters, including kinematic viscosity at 40°C and 100°C, copper corrosion limits, flash points, moisture density, and pour points. Every batch of exported lubricant is tracked by unique laboratory reference certificates to guarantee performance consistency.
We offer comprehensive technical collaboration, including custom additive balancing (anti-foaming, anti-wear, oxidation inhibitors), specific packaging sizing from 1L cans to 200L drums, custom label printing, and global compliance documentation (SDS, Reach compliance). Our engineering teams work alongside your system designers to validate lubricant-elastomer compatibility and performance limits.
Broadening efficiency and equipment protection under diverse load factors, extreme pressures, and harsh operating climates.
Take a virtual tour inside our chemical processing halls, specialized packaging lines, and quality assurance control centers.
Verified quality systems and international approvals ensuring smooth global customs handling and industrial compliance.
Send us your specific temperature profiles, refrigerant gas composition, compressor models, or OEM branding specifications. Our technical division will respond with standard pricing sheets, customized formulations, and shipment logistics within 24 business hours.
Shandong Longhai Lubrication Technology Development Co., Ltd., coordinates direct export and technical support worldwide. Contact us to establish regional distributorships or request high-volume industrial trials.
Zibo City, Shandong Province, China
Fully Insured by PICC (China People's Insurance Company)
Over 5% of Annual Revenue reinvested in specialized synthetic lubrication research.
Shandong Longhai Lubrication Technology Development Co., Ltd. Established 2009. Registered Brands: "Century Longhai" / Strategic Partner: British "A Ba" Series.
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