Tianjin Binhai OTAi Waterproof Materials Co.,Ltd was established in 2010 . The company is specializes in the production of high quality TPO, PVC, HDPE, EDPM waterproof membrane and Cementitious Waterproof Coatings. Accompany with it  ,there are Sino-Us Joint Venture company named OCEM Technology ,which is providing all kinds of prefabricated waterproofing accessories . And Otai engineering company to provide the engineering service and application supports and consulting .Otai is dedicated to provide the full waterproofing system to our customers with the innovative products and considerate service .