Providing high-efficiency thermal management protection and ultimate machinery performance under critical environments.
Navigating the complex global market transition toward low-GWP refrigerants and high-efficiency AC compressor architectures.
As the international HVAC/R market transitions rapidly under strict environmental agreements like the Kigali Amendment, global procurement directors face critical choices. Modern HVAC systems require lubricants that offer high miscibility, thermal stability, and wear prevention across a complex array of modern refrigerants. From conventional HFCs to low-GWP alternatives (such as HFO-1234yf, CO2 R-744, Propane R-290, and Ammonia R-717), selecting the right compressor fluid directly controls system longevity and coefficient of performance (COP).
Unsuitable or off-spec AC compressor lubes degrade prematurely, forming heavy organic acids and sludge. In electric vehicle (EV) thermal management systems, a lubricant's dielectric properties are paramount. Insufficient breakdown voltage can cause catastrophic electric compressor failure or fire hazard. Shandong Longhai Lubrication formulations are specifically blended with advanced anti-wear packages and acid scavengers, keeping copper parts free from corrosion and preventing insulation breakdown in hermetic systems.
Furthermore, moisture ingestion into POE oils can initiate hydrolysis, generating carboxylic acids that attack motor windings and trigger compressor burnouts. Our strict clean-room dehydration packaging process limits moisture levels to less than 30-50 ppm, surpassing standard industry limits.
A comprehensive breakdown of lubricant chemistries optimized for next-generation refrigeration cycles and heavy-duty industrial HVAC hardware.
Understanding the molecular structures of modern synthetic base oils determines their efficiency in varying compressor designs. While PAGs are highly polar and display superior wear prevention in mobile automotive air conditioning (relying heavily on R134a and R1234yf), POE lubes remain the leading option for commercial stationary HVAC systems using HFCs, HFO blends, and natural CO2 systems. PVE (Polyvinyl Ether) offers excellent hydrolytic stability as it does not undergo hydrolysis in the presence of water, making it a robust selection for complex residential split-system designs.
| Lubricant Chemistry | Typical Refrigerant Compatibility | Dielectric Strength (kV) | Hydrolytic Resistance | Miscibility Profile |
|---|---|---|---|---|
| PAG (Polyalkylene Glycol) | R134a, R1234yf, CO2 (R-744) | >30 kV | Moderate (No reaction, physically absorbs water) | Excellent at low temperatures |
| POE (Polyol Ester) | HFCs (R410A, R404A), HFOs, CO2 | >45 kV | Requires chemical additive stabilizers | Excellent wide range miscibility |
| PVE (Polyvinyl Ether) | R410A, R32, HFC/HFO Blends | >40 kV | Superior (Completely resists chemical decomposition) | Excellent compatibility |
| Alkylbenzene (AB) | HCFCs (R22), Ammonia (R-717) | >35 kV | Excellent | Good in mineral oil replacement systems |
A leading high-tech manufacturer from Zibo, Shandong, engineering premium lubrication systems since 2009.
Established in 2009 and headquartered in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales. With over 15 years of focus in the lubricants sector, we have built a complete industrial chain system dedicated to providing high-quality lubrication solutions for the global industrial and transportation fields.
We own our proprietary domestic brand "Century Longhai" and support the strategic international brand British "A Ba" series. Our comprehensive catalog ranges from diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, special engine oil for engineering machinery, special oil for natural gas, full synthetic oil, automotive urea solution, antifreeze, to specialized motorcycle oil, industrial oil, automatic transmission oil, and custom refrigeration lubes. The quality and performance of our formulations are fully insured by PICC (China People's Insurance Company).
Every batch is manufactured under strict international standards to ensure stability and chemical purity under extreme working conditions.
Our production facilities maintain certifications for ISO 9001-2015 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 (originally OHSAS 18001) Occupational Health Management System. This guarantees consistent production standards across all product lines.
Shandong Longhai has attained official Mercedes-Benz automatic transmission fluid approval. We use global engineering protocols to ensure our industrial refrigeration and AC compressor oils match or exceed original compressor builders' (such as Bitzer, Frascold, Copeland, and Danfoss) requirements.
Our blending facility covers 131 acres, with an annual output capacity of 200,000 tons. Equipped with fully automated metering and filling lines, we maintain a filling accuracy of 1‰-2‰. The automatic line accelerates the packing process by 20%-35%, protecting product purity from moisture exposure.
From custom viscosity designs to brand positioning support, we offer tailor-made synthetic lubricant solutions.
Fully synthetic and semi-synthetic lubricant formulations tailored to vehicle/equipment requirements, climatic conditions or market positioning to meet international standards such as API/ACEA.
Supports small-scale trial production to large-scale production, covering engine oil, transmission oil, industrial lubricants and other full categories, filling specifications are flexible and optional.
Certified by ISO 9001, IATF 16949, etc., provide authoritative third-party test reports to ensure product performance and compliance.
We offer packaging design, label printing and technical documentation support (including SDS and TDS sheets) to help you build a premium brand image.
We analyze customer specifications, equipment types, refrigerants, operating climates, and target standards.
Our engineers construct customized POE, PAG, or PVE synthetic base formulations with optimized additive chemistries.
We conduct critical lab evaluations: testing miscibility limits, dielectric breakdown, kinematic viscosity, and copper strip corrosion.
High-speed, moisture-free packaging in nitrogen-purged drums/bottles under clean-room conditions.
Continuous monitoring, formulation updates for new refrigerant changes, and batch analytical support.
Our modern laboratory is equipped with precision analytical instruments designed to support lubrication development.
Collaborative spaces driving green engineering initiatives.
Partnering with academic institutions to refine ester and glycol synthesis.
Equipped with high-performance gas chromatographs and Karl Fischer titrators.
Assessing pour point, flash point, and copper corrosion metrics.
Secure and climate-controlled storage for high-grade synthetic base stocks.
Robotic lines ensuring high-efficiency operations and reliable delivery.
Serving major HVAC and industrial operations in 139 cities, ensuring stable equipment performance under extreme conditions.
Ensuring seamless global distribution and strict regulatory compliance across major international markets.
Our formulations comply with RoHS, REACH, and GHS standards. We provide complete Safety Data Sheets (SDS) and Technical Data Sheets (TDS) for smooth customs clearance and environmental reporting.
We work with international logistics networks to guarantee fast delivery of bulk containers and customized packs. Our automated filling lines ensure order accuracy and prompt shipping.
Our engineers provide technical support, including oil analysis program setups. By tracking wear metals, viscosity changes, and acid values, we help extend compressor service life and prevent downtime.
Expert technical answers regarding synthetic lubricant chemistry, refrigerant compatibility, and system optimization.
A broad range of heavy-duty lubrication solutions designed to protect heavy machinery, diesel fleets, and gear systems.
Meeting the performance demands of global operations with internationally accredited manufacturing standards.
Longhai