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NT5186 is an ashless, multifunctional liquid additive that, as a thiazole‑dodecylthiol derivative, simultaneously provides metal deactivation (passivation), extreme‑pressure and anti‑wear performance, and auxiliary antioxidant benefits. Even at low loadings, it effectively inhibits the corrosive action of active sulfur on copper and copper alloys, while synergistically enhancing the performance of sulfur‑containing extreme‑pressure additives. It is widely used in automotive and industrial lubricants as well as metalworking fluids, significantly improving equipment protection and extending oil service life.
NT5886 is an ashless, multifunctional liquid additive that, as a thiazole‑based alkyl mercaptan derivative, combines high‑efficiency metal deactivating (particularly copper protection), corrosion inhibition, extreme‑pressure performance, and auxiliary antioxidant functions. Even at low loadings, it exhibits outstanding sulfur‑induced corrosion inhibition, while its unique formulation effectively suppresses the corrosive effects of hydrogen sulfide, making it an ideal choice for enhancing product performance and durability in lubricants, fuels, and metalworking fluids.
NT5986 is an ashless, multifunctional liquid additive. As a thiazole‑nonyl mercaptan derivative, it exhibits excellent copper corrosion inhibition and metal deactivation, while also providing anti‑wear, extreme‑pressure, and auxiliary antioxidant properties. Compatible with both mineral and synthetic oil systems, it is widely used in automotive lubricants, industrial lubricants, and metalworking fluids.
NT3852 is a multifunctional oil soluble liquid SbDSb additive with excellent performance. As a widely used amino acid salt additive, it has outstanding extreme pressure performance, excellent anti-wear performance, and excellent antioxidant performance. This additive has a wide range of applications, suitable for engine oil, compressor oil, gear oil, synthetic lubricants, and various types of lubricating greases, and has good compatibility with various industrial oils, gear oils, and lubricating greases.
Specializing in the R&D, production, and sales of lubricant and grease additives
Changsha Wangcheng Petrochemical Co., Ltd. (abbreviated as “Wangcheng Petrochemical”) was founded in 1987, originally known as the Changsha Wangcheng Petrochemical Plant. It is a national-level high-tech enterprise specializing in the R&D, production, and sales of lubricant and grease additives.
Over the past four decades, the company has consistently focused on technological breakthroughs and domestic substitution of critical single additives at the upstream end of the industrial chain, achieving significant advances in core areas such as extreme-pressure and anti-wear additives and oiliness agents. As a result, it has grown into a leading specialized additive manufacturer in the Central-South region. Leveraging its solid technological foundation and robust product capabilities, the company has been recognized as a National Science-and-Technology-Based SME, a National Innovative SME, a Hunan Provincial New Materials Enterprise, and a Key Manufacturing Enterprise for Industry-Finance Cooperation in Hunan Province. It has also established long-term strategic partnerships with major enterprises such as China National Petroleum Corporation and Sinopec.
Establishment Date
Independently developed
Partner Companies
Extreme Pressure Anti-Wear Agent
Antioxidant Extreme Pressure Agent
Application Areas
Industrial Lubrication
Automotive lubrication
Marine lubrication
Industrial Lubrication
Automotive lubrication
Marine lubrication
Aviation Lubrication
Special Lubrication
Metalworking
Qualification Certificate
Business Updates
2025.12.26
Company News
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Business Address
No. 123 Baiyang Road, Wangcheng Economic Development Zone, Changsha City, Hunan Province, China
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