Joint ventures: Shanghai Hairun Company and Lubrizol-Lanlian Company.
Private enterprises: Tianhe, Liaoning, southern Wuxi, mainly middle and low-grade products.
Major domestic single-dose manufacturers:
Luborun Lanlian Co., Ltd., Wuxi South Additive Co., Ltd., Liaoning Tianhe Fine Chemical Co., Ltd., Jinzhou Petrochemical Company Additive Factory, Xinjiang Rand Fine Chemical Industry, Xinxiang Ruifeng Chemical Industry, Suzhou Special Oil Products Factory, Beijing Xingpu Fine Chemical Industry Company, etc.
Abroad:
Basically formed the distribution pattern of four major additive companies: Lubrizol, Infineon, Chevron Oronite and Afton;
There are also several relatively small additive companies, which mainly produce single doses and are in the leading position in the world in specific product fields:
Chemtura: Cleaning agents, antioxidants, etc.
Ciba: antioxidant, extreme pressure antiwear agent, etc.
Vanderbilt: extreme pressure antiwear agent, antioxidant and metal passivator.
Rohmax: viscosity reducer and pour point depressant.