Established in 2009, Shandong Longhai Lubrication Technology Development Co., Ltd. (headquartered in Zibo, Shandong, China) has emerged as a high-tech enterprise integrating R&D, production, sales, and comprehensive after-sales service. With over 15 years of focus on the heavy-duty engine oil and industrial lubricant sector, the company has engineered a fully integrated industrial supply chain. We are committed to supplying customized high-performance solutions for heavy-duty trucking, marine logistics, industrial manufacturing, and agricultural machinery globally.
Operating under our key proprietary brand, "Century Longhai", as well as our international strategic brand "A Ba" (jointly developed via British strategic collaboration), our comprehensive product line covers a vast portfolio. This includes advanced diesel engine oils (API CK-4, CJ-4, CI-4 Plus, CH-4), high-tier gasoline engine oils (API SP, SN, SL, SJ), industrial gear oils, transmission fluids, anti-wear hydraulic oil, and special utility formulations. Demonstrating our structural reliability, our products are backed by comprehensive quality liability insurance from PICC (China People's Insurance Company), ensuring risk mitigation for large-scale fleets and commercial distributors alike.
Our Zibo manufacturing base spans over 131 acres, maintaining a high-capacity infrastructure that produces 200,000 tons of lubricating oils annually. To maintain a technological lead, Longhai allocates more than 5% of its gross annual revenue back into research and development. We collaborate with national engineering universities and premium research organizations to study friction reduction, thermal stability, and soot dispersancy. Additionally, we integrate automatic metering blenders and fast-filling packaging equipment to ensure our formulations perform reliably under severe operating environments.
Through our expansive domestic and international sales network, our products support machinery in 139 cities across 29 provinces and municipal regions in China, while rapidly scaling export operations to serve heavy enterprises in Europe, Southeast Asia, South America, and the Middle East.
Global logistics and industrial heavy equipment are adjusting to strict emission rules like Euro VI, EPA 2020, and Stage V. Consequently, these standards demand lubricants with reduced SAPS (Sulfated Ash, Phosphorus, and Sulfur) to protect exhaust aftertreatment devices such as Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) systems.
Modern fleet operations aim to reduce Total Cost of Ownership (TCO). High-performance synthetic lubricants offer excellent viscosity retention, oxidation control, and base number (TBN) stability, allowing heavy vehicles to operate longer between oil changes without risking component wear.
From deep-surface mining rigs to long-haul logistics fleets navigating diverse terrains, engine oils face intense thermal and mechanical stress. Our formulations protect against high-temperature oxidation and maintain film thickness to prevent metal-to-metal friction.
To address these commercial requirements, heavy-duty engine oil must combine premium base stocks (API Group II, Group III, or Polyalphaolefins Group IV Synthetics) with modern additive packages. Key qualities like shear stability index (SSI), high-temperature high-shear (HTHS) viscosity, and soot dispersancy determine an oil's performance. Shandong Longhai designs its engine oils to meet these metrics, helping heavy-duty diesel engines maintain efficiency, minimize downtime, and reduce fuel consumption.
Operating a lubricant manufacturing plant in China's industrial hub of Zibo allows us to optimize supply chains and production efficiency. Our factory features automated batch blending systems, computerized weight-metric check-weighers, and modern high-speed packaging lines. This advanced integration improves filling speeds by 20% to 35% over older processes, while keeping filling errors within 1‰ to 2‰. This high precision reduces product loss and ensures uniform consistency across every batch.
Our quality management systems are certified under international standards, including ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health & Safety). Additionally, our automated transmission lubricants hold official Mercedes-Benz approvals, highlighting our ability to satisfy strict global OEM requirements.
Long-haul trucks operating across cross-border freight routes face varying temperatures and fuel qualities. Our API CK-4 and CJ-4 synthetic diesel engine oils resist oxidation under heavy loads, control soot buildup, and protect components to extend service intervals.
Excavators, bulldozers, and haul trucks run under heavy dust, dampness, and high loads. Our heavy-duty hydraulic and diesel oils feature high anti-wear (AW) properties, preventing particulate damage and metal-on-metal wear.
Marine engines require high-alkalinity lubricants (high TBN) to neutralize acidic byproducts formed during fuel combustion. Our marine engine formulations resist water contamination, inhibit rust, and protect large marine cylinders.
We work with global distributors, state-owned industrial enterprises, and retail brands. Our factory provides flexible OEM/ODM services, developing custom formulations that align with API, ACEA, and specific OEM requirements.
We define target viscometrics, additive packages, and regulatory standards.
We select base oils (Group II/III/PAO) and add matching additives.
We test physical-chemical properties and evaluate oxidation resistance.
Automated blending and packaging into drums, IBC totes, or retail bottles.
Port logistics out of Qingdao, supported by full quality documentation.
Longhai
