Direct supply routes from our smart manufacturing plant. Designed to deliver superior wear protection, thermal stability, and prolonged fluid service life.
Global industrialization is undergoing a radical energy shift. Today's mechanical systems utilize smaller, tighter tolerances, running at much higher rotational speeds and loads than their predecessors. Heavy-duty gear lubrication has evolved far beyond basic crude oil distillation fractions; it now demands high-purity synthetic and highly refined Group II/III mineral basestock technologies, combined with complex sulfur-phosphorus Extreme Pressure (EP) additive chemistries.
As bulk exporters, we monitor these dynamics closely. We recognize that regional environmental regulations, including European REACH and North American TSCA regulations, demand non-toxic, highly biodegradable formulations without sacrificing structural shear stability or anti-corrosion metrics (as measured by the ASTM D130 copper strip standard).
In modern B2B manufacturing, structural capacity limits dictate delivery timelines and quality consistency. Our high-tech manufacturing plant in Zibo, Shandong, bridges these limitations using automated production.
Our facility runs on digital metering systems that coordinate base oil intake and additive dosage with extreme accuracy. By utilizing computerized mass-flow systems, we achieve a batch-to-batch variation threshold under 0.1%, eliminating the risk of human error during operations.
Operating custom-configured high-speed filling lines, we run automated weight-correction feedback loops. This technology secures a high filling precision of 1‰-2‰ and increases production speeds by 20% to 35% compared to semi-automated facilities.
Every single batch undergoes testing at our on-site precision laboratories before leaving the packaging hall. Checking fluid attributes, including Kinematic Viscosity (ASTM D445), Flash Point (ASTM D92), and Pour Point (ASTM D97), guarantees the protection of your supply chain reputation.
Founded in 2009 in Zibo, Shandong, Shandong Longhai Lubrication Technology Development Co., Ltd. is a high-tech manufacturing enterprise focused on R&D, advanced compounding, and global export distribution. Over the past 15 years, the company has established a comprehensive industrial model to supply tailored lubrication systems for complex industrial applications and commercial transportation fleets.
We market our products under our primary brand, "Century Longhai", and manage the formulation of the British "A Ba" series under strategic licensing. Our complete product lines cover diesel engine oil, gasoline engine oil, gear oil, hydraulic transmission oil, anti-wear hydraulic oil, specialized engineering machinery fluid, natural gas engine lubricant, fully synthetic industrial oil, automotive urea solutions, glycol-based antifreeze, motorcycle engine oil, and industrial process fluids.
To assure buyers of our reliability, our complete product lineup is backed by product liability insurance from the PICC People's Insurance Company of China.
Longhai Technology maintains strict quality standards through our integrated certifications. The enterprise operates under the ISO-9001-2015 Quality Management System, ISO 14001:2015 Environmental Management System, and ISO 45001:2018 Occupational Health and Safety Management System.
Additionally, our lubricants carry certifications including Mercedes-Benz Approval for transmission systems. This demonstrates that our chemical formulations perform reliably under severe operating pressures and temperatures. Our integration of global raw materials and advanced additive formulations helps our partners extend machinery operating windows and minimize unplanned maintenance overheads.
We source raw materials from leading global base oil suppliers and top-tier additive companies. This helps ensure that all formulations comply with standard industry parameters, including API, ACEA, DIN, and AGMA requirements.
A reference table outlining structural physical chemistry parameters for heavy-duty industrial EP (Extreme Pressure) and Synthetic Gear Oils.
| Evaluation Parameter | Methodology | Premium Mineral (ISO VG 220) | Synthetic PAO (ISO VG 220) | Application Benefit |
|---|---|---|---|---|
| Viscosity Index (VI) | ASTM D2270 | 98 - 105 | 150 - 165 | Maintains protective fluid film at elevated operating temperatures. |
| Four-Ball Weld Load (kgf) | ASTM D2783 | 250 min | 315 min | Prevents gear tooth scuffing under extreme shock loads. |
| Pour Point (°C) | ASTM D97 | -18 to -15 | -45 to -42 | Ensures cold-start pumpability in low-temperature regions. |
| FZG Scuffing Load Stage | DIN 51354-2 | Pass 12+ | Pass 14+ | Minimizes micro-pitting fatigue on hardened gear flanks. |
| Demulsibility (min to 3ml emulsion) | ASTM D1401 | < 20 min | < 15 min | Accelerates water separation in environments prone to moisture ingress. |
We provide full-service OEM and ODM contract manufacturing, enabling distributors, fleet operators, and industrial brands to source high-quality lubricants tailored to their specifications.
We formulate tailored synthetic (PAO/PAG) and semi-synthetic lubricant blends to meet specific viscosity, load capacity, and regulatory requirements.
Our production lines support flexible filling volumes, ranging from 1L bottles for automotive retail to 200L drums and IBC totes for industrial applications.
All customized blends undergo performance verification testing. We provide detailed ASTM analysis sheets, material safety data sheets, and certification support.
Our design team creates customized labels, carton boxes, and packaging layouts, helping you build a professional brand image in your local market.
Define viscosity, application parameters, and performance targets.
Formulate base oil and additive chemistry blends.
Conduct ASTM standard testing on test batches.
Run automated blending and filling on packaging lines.
Manage international shipping and customs documentation.
Industrial lubricants must perform reliably under varying regional and environmental conditions. We engineer specialized formulas for diverse operating conditions.
In hot and dusty environments, machinery is prone to particulate contamination. Our lubricants feature high dispersancy and robust film strength, helping protect planetary drives, final drives, and differentials from abrasive wear.
Ocean-going fleets operate in high-humidity, high-salinity environments. Our marine formulations provide strong demulsibility and high rust protection (ASTM D665B), helping maintain oil film integrity and protect component metallurgy.
Wind turbines require lubricants that perform across wide temperature fluctuations in hard-to-reach locations. Our synthetic formulations resist micro-pitting and extend drain intervals, reducing maintenance requirements in off-shore installations.
A compilation of frequently asked questions from procurement managers, maintenance directors, and global distribution partners.
DIN 51517 Part 3 is the standard specification for industrial gear oils operating under heavy loads. A compliant lubricant must contain specialized anti-wear and EP additives to survive intense contact pressures without surface failure. The standard requires the oil to pass the FZG Stage 12 test, resist oxidation, control foaming, protect against rust (ASTM D665), and separate water quickly (ASTM D1401).
Synthetic Polyalphaolefin (PAO) gear lubricants offer significant benefits: a high natural Viscosity Index (typically >150), excellent shear stability, and a lower pour point. They resist oxidation at high temperatures, which helps reduce varnish formation. In operations with wide temperature variations, PAO lubricants reduce mechanical friction and extend drain intervals compared to standard mineral-based alternatives.
Our packaging systems use PLC-controlled flow meters. The filling nozzles feature real-time weight correction feedback loops. This configuration maintains filling tolerances within 1‰ to 2‰. Automated capping and labeling lines help ensure consistent seal integrity, which helps prevent leakage and contamination during international shipping.
When stored in original, unopened containers in a dry environment between 5°C and 40°C, our industrial gear and motor lubricants maintain their performance specifications for up to 5 years. Extreme temperature fluctuations and moisture exposure should be avoided to prevent additive separation or hydrolysis.
Yes. Our R&D center specializes in reverse engineering and formulating custom blends. We can match specifications for viscosity, load capacity, seal compatibility, and wear protection, and provide testing data to support your certification processes.
A selection of specialized diesel lubricants, high-efficiency compressor oils, and heavy-duty gear systems designed to protect equipment and optimize performance.
Get a virtual look inside our factory. We operate modern warehousing facilities, advanced engineering labs, and bulk blending platforms.
Longhai
