Tieling water valve fitting & trading co., ltd is the largest manufacturer in ***** is listed as one of "National Machinery Industry 500 Strong".It was established in 1935, and had been authorized through "ISO9001 management system". The production is including butterfly valve, gate valve, check valve, square penstock, round penstock, regulating valve etc, adds up 12 ***** caliber is from ***** addtion, We own strong technical force, complete production equipment, accurate inspection means, and perfect quality assurance ***** valves have been exported more than 40 countries, as well, as the best valve manufacture base.