Tianjin Tanggu water-seal valve Co., Ltd. was establised in 1997 which is located in Tianjin, China. We are a specialized manufacturer which integrates design and development, production, installatioin, sales and service. The main products include Center line butterfly valve, Flanged valves, wafer butterfly valve, lug butterfly valve etc. our valves are widely used in water supply and drainage, electric power, petrol chemical industry, metallurgy and other industries!