JINZHOU RUNDA CHEMICAL CO.,LTD: ,the products covered the TBN detergent, ashless dispersant, ZDDP, EP extreme pressure anti-wear agent, antioxidants, and other series of single agent and compound agent, application field such as: gasoline engine oil,diesel engine oil, gear oil, 2 stroke motor engine oil, Hydraulic oil,industrial oil, anti-rust oil, metal working oils,marine cylinder oils.