Explore our high-grade synthetic, semi-synthetic, and mineral formulation lubricants engineered for ultimate component protection.
The global industrial refrigeration market is undergoing a structural transition driven by environmental compliance, energy security, and system efficiency. As regulations mandate the phase-down of high-GWP (Global Warming Potential) hydrofluorocarbons (HFCs), the demand for top-grade synthetic refrigeration oils has skyrocketed. Lubricants are no longer viewed merely as functional fluids; they are now recognized as critical thermodynamic components.
Modern refrigeration compressors, running under higher compression ratios, elevated temperatures, and using next-generation refrigerants like CO2 (R744), Ammonia (R717), and HFOs (such as R1234yf), require specialized chemical compositions. High-quality synthetic Polyolester (POE), Polyalkylene Glycol (PAG), and Polyvinyl Ether (PVE) lubricants are essential to preserve compressor integrity, ensure proper oil return, and maintain heat transfer efficiency at the evaporator. Shandong Longhai Lubrication Technology provides high-performance oil configurations designed to support these complex global industrial transitions.
Selecting the right lubricant chemistry is critical for compressor life, chemical stability, and system performance.
Choosing a refrigeration oil requires balancing the refrigerant type, working temperatures, and compressor design. In modern transcritical CO2 or HFC/HFO systems, oil solubility and miscibility determine overall efficiency. Standard mineral oils fail to dissolve in eco-friendly refrigerants, causing oil logging in evaporators and oil starvation in the compressor.
| Lubricant Base Type | Refrigerant Compatibility | Typical Applications | Key Performance Strengths |
|---|---|---|---|
| Polyolester (POE) | HFCs, HFOs, CO2 (R744) | Commercial HVAC, Cold Storage | Excellent thermal stability, highly miscible with polar refrigerants. |
| Polyalkylene Glycol (PAG) | Ammonia (R717), R134a, HFO-1234yf | Automotive A/C, Industrial Process | Superb lubricity, high viscosity index, low solubility with hydrocarbons. |
| Polyvinyl Ether (PVE) | HFCs, HFOs, Blends | Residential Split Systems, VRF | Hydrolytically stable (does not react with moisture), high efficiency. |
| Alkylbenzene (AB) | HCFCs (R22), Ammonia (R717) | Retrofitted Industrial Plants | Improved low-temperature solubility compared to standard mineral oil. |
| Mineral Oil (Naphthenic/Paraffinic) | HCFCs, Ammonia, Isobutane (R600a) | Domestic Refrigeration, Light Commercial | Cost-effective, excellent chemical compatibility with metals and elastomers. |
Established in 2009 and headquartered in the industrial hub of Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating premium research and development, smart manufacturing, and global sales. For over 15 years, we have built a comprehensive industrial chain dedicated to delivering high-performance lubrication solutions to global industrial sectors.
As a reliable partner in the lubrication industry, Longhai Technology operates its proprietary brand "Century Longhai" alongside the international strategic brand British "A Ba" series. Our wide product range includes diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engineering machinery oils, natural gas engine oils, fully synthetic oils, automotive urea solution, antifreeze, motorcycle oils, industrial oils, and automatic transmission oils.
To ensure complete peace of mind, all our products are insured by PICC (People's Insurance Company of China), providing quality assurance for our global clientele.
Advanced production facilities designed to deliver quality, precision, and reliable supply chains.
Innovation drives everything we do. Longhai Technology invests over 5% of its annual revenue into research and development. We collaborate with leading academic and scientific research institutions to continually refine lubricant technologies, ensuring they meet the requirements of modern machinery operating under extreme loads and temperatures.
Engineered for high performance across diverse commercial and industrial refrigeration environments.
Ensures continuous uptime and low-temperature fluidity in walk-in freezers, refrigerated trucks, and distribution centers. Our refrigeration oils prevent evaporator wax buildup, ensuring maximum heat transfer and efficiency.
Optimized for large centrifugal, screw, and scroll compressors used in commercial buildings, shopping malls, and district cooling systems. Offers excellent wear protection and thermal stability under varying seasonal loads.
Designed to withstand humid and saline marine environments. Provides high hydrolytic stability, preventing moisture-induced chemical breakdown, acid formation, and compressor corrosion on container ships and fishing vessels.
Suitable for high-capacity ammonia (R717) and CO2 (R744) cascade systems used in food freezing, beverage carbonation, and petrochemical gas liquefaction. Resists carbon formation under high discharge temperatures.
Tailored for next-generation automotive HFO-1234yf and R134a systems. Our PAG formulations offer exceptional dielectric properties, essential for electric vehicle (EV) hermetic scroll compressors.
Formulated for deep-temperature applications, such as medical vaccine storage and industrial gas separation, where pour points must remain extremely low to prevent fluid separation.
Quality and safety are at the core of our manufacturing processes. Longhai Technology operates under strict quality, environmental, and occupational safety frameworks:
Our facility integrates advanced test equipment, including gas chromatographs, kinematic viscometers, Karl Fischer moisture titrators, and copper strip corrosion testers. Every batch undergoes rigorous quality control to ensure consistency under extreme working conditions.
Custom formulations, adjustable batch sizes, and compliance support for global brands and distributors.
We formulate fully synthetic and semi-synthetic lubricants tailored to specific machinery requirements, ambient operating conditions, and regional environmental standards. Our chemical engineers design lubricants matching international classifications, including API, ACEA, and ISO VG specifications.
Whether you need customized viscosity profiles, enhanced anti-wear additive packages, or specialized moisture resistance, our laboratory works directly with your technical team to develop and approve proprietary formulations.
Our structured development process ensures high quality and efficiency from initial consultation to final delivery.
Evaluating target applications, climate conditions, viscosity needs, and chemical requirements.
Our laboratory develops custom blends, tailoring additive ratios for optimal performance.
Rigorous lab analysis and bench testing to verify performance before full-scale production.
Precise blending, automated filling with 1‰-2‰ accuracy, and quality verification.
On-time shipping with complete technical dossiers and post-delivery support.
A closer look at our cleanrooms, manufacturing campus, automated filling lines, and research centers.
Our production quality is backed by certified testing, industry approvals, and comprehensive process auditing.
Demonstrating reliable performance across demanding industrial environments worldwide.
Critical technical insights on selection, compatibility, moisture management, and maintenance.
Complete product range including anti-wear hydraulic oils, gear lubricants, and premium automotive and industrial fluids.
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