Henan Ocean Imp&Exp Co.,Ltd belongs to Sitong（Dengzhou） Chemical Construction Co.,Ltd, located in Zhengzhou, the capital city of Henan Province. Our company was founded in 2000, has more than 14 years development experience.Sitong is a manufacturer of concrete admixture with advanced testing facilities and strong technical force. With more than 14 years development experience on concrete admixture area, we created a series of BM products -technology construction chemical. BM-technology concrete admixture includes Napthalene, Polycarboxylate based liquid , compouned water reducer and special concrete addititives. We are constantly adapting our products and technical service to the changing requirement of its customers.We also have several professional working teams to offer high efficiency help in your engineering construction.We keep a serious and pragmatic attitude at work, our company is committed to independent research and development, and constantly develop new products, we believe that technology changes the world. Looking forward to have cooperation with you!