Discover our premium collection of industrial lubricants engineered for extreme high and low temperature operations.
The global cooling landscape is undergoing a massive transformation, driven by environmental mandates such as the Kigali Amendment to the Montreal Protocol. The critical shift away from traditional High-GWP Hydrofluorocarbons (HFCs) to low-GWP Hydrofluoroolefins (HFOs) and natural refrigerants—such as Carbon Dioxide (R744), Ammonia (R717), and Hydrocarbons (like Propane R290)—demands a new paradigm in lubrication technology. Modern refrigeration oils must maintain precise chemical compatibility, high miscibility, and exceptional thermal stability at ultra-extreme pressure states.
As a leading lubrication specialist, Shandong Longhai Lubrication Technology provides high-grade synthetic formulations, including Polyolester (POE) and Polyalkylene Glycol (PAG) chemistries. These formulations are specifically engineered to eliminate oil log in evaporators, prevent thermal decomposition at compressor discharge valves, and optimize heat transfer rates. This ensures that global cold chains, HVAC infrastructures, and marine refrigeration systems operate at peak efficiency with minimal downtime.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a state-recognized high-tech enterprise integrating R&D, production, and international sales. With over 15 years of focused experience, we have constructed a complete industrial chain system dedicated to providing premium lubrication solutions for industrial and transport sectors globally.
We own the well-known domestic brand "Century Longhai" and represent the British "A Ba" strategic series. Our product portfolio spans synthetic refrigeration oils, diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, special machinery oil, natural gas engine oil, full synthetic oil, automotive urea solutions, antifreeze, and industrial oil. To guarantee quality reliability, our entire brand portfolio is insured by the PICC (China People's Insurance Company).
Equipped with an advanced intelligent base covering 131 acres, we run precision laboratories and high-efficiency fully automated filling lines. This infrastructure achieves a metering accuracy of 1‰-2‰, increasing filling speeds by 20%-35% compared to conventional operations. It guarantees prompt global delivery and uniform production standards.
Our chemical formulations are engineered for specific system applications. We prioritize base oil purity, additive stability, and refrigerant compatibility across diverse applications.
In transport refrigeration and commercial cold storages, temperatures swing rapidly. Our synthetic formulations exhibit extremely high viscosity indexes, preventing oil thickening in evaporators at -40°C while maintaining strong film barriers inside compressor screw rotors at 100°C. This ensures continuous cooling with lower energy consumption.
CO2 systems operate under extremely high pressures, requiring lubricants that resist thinning from refrigerant dissolution. Our custom POE formulation controls refrigerant solubility, preserving lubricant film strength and viscosity inside the compressor. This prevents metal-on-metal wear under high loads.
Ammonia is highly reactive but offers excellent thermodynamic performance. In industrial refrigeration, we employ hydrotreated mineral oils and synthetic polyalphaolefins (PAO) that do not react with NH3. This stops sludge formation, keeps systems clean, and extends oil drain intervals up to 8,000 hours.
Shandong Longhai Lubrication Technology provides bespoke contract manufacturing services. We formulate fully synthetic, semi-synthetic, and premium mineral lubricants aligned with international API, ACEA, and DIN 51503 standards.
We design chemical formulations to meet specific vehicle and equipment specifications, regional climate demands, and performance targets. Through our joint innovation center and precision testing laboratories, we match target viscosity profiles, chemical compatibilities, and oxidation stabilities for challenging environments.
Comprehensive evaluation of compressor operating dynamics, refrigerant selections, and ambient conditions.
Custom blending of synthetic base stocks and anti-wear additive packages at our in-house facility.
Testing stability, viscosity limits, floc point, and miscibility curves in our precision testing laboratory.
High-precision automated filling (accuracy of 1‰-2‰) with delivery tracking for global shipments.
Ongoing fluid analysis, technical training, and system retrofitting advice from our tribology experts.
Our manufacturing operations strictly follow international quality management guidelines. We maintain structural certifications to ensure uniform product reliability.
Longhai Lubrication Technology has passed ISO 9001:2015 quality system certification, ISO 14001:2015 environmental management system certification, and ISO 45001:2018 occupational health and safety management system certification. Our automatic transmission fluid series carries formal Mercedes-Benz approvals, demonstrating our capability to satisfy demanding OEM requirements.
We source premium base oils and advanced additives globally. Through advanced production processes and testing equipment, our finished lubricants deliver strong thermal-oxidative stability and wear protection under extreme loads, helping industrial customers lower maintenance costs.
Longhai Technology invests over 5% of annual revenue directly into research, development, and laboratory upgrades. Through collaborations with universities and research institutes, we continuously refine our lubrication technologies.
Our analytical laboratories are equipped to measure key lubricant properties, including:
Technical advice from our lubrication engineers on selection, compatibility, and maintenance.
High-demand products formulated for modern light and heavy-duty machinery.
Industrial facilities where Longhai products are blended, filled, and shipped daily.
Discover our premium collection of automotive and heavy machinery lubricants engineered to optimize power delivery.
At Shandong Longhai Lubrication Technology Development Co., Ltd., we follow our management policy of "planning big strategies, focusing on technology, creating high quality, and keeping reputation." Our business philosophy centers on technical innovation, quality-driven growth, and brand value.
We believe that "products are character, quality is life, customer first" is the core of a sustainable business. We focus on developing high-performance solutions for automotive, industrial gear, hydraulic transmission, and refrigeration systems. Working with global partners, we deliver reliable tribological solutions for heavy machinery and industrial applications.
Discuss custom formulations, OEM blending options, or product specifications. Our engineering team is ready to assist with system assessments and fluid analysis.
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