Gaomi Tongchuang Valve Core Co. Ltd, subsidiary of Himile Group, was founded in 1999. As the world's valve core manufacturing base, it annually produces 1.2 billion tire valve cores, 100 million auto and household air-conditioning cores, which takes up 35% of global share. Tongchuang also specializes in various special cores, such as liquid petroleum gas valve core, nitrogen spring valve core, extinguisher valve core, TPMS special core, environmental-friendly core, battery pressure relief valve core etc., and air-conditioning valves.

Professional R&D team with 26 years valve core experiences enables us a full automatic production line creation ahead of Germany. Excellent employees holding shares partnership & cooperation mechanism and consistent creation concept bring the company rapid development and a leading brand among valve core industry. Tongchuang passed ISO9001: 2008 and TS16949 of quality system certificate respectively, and strictly follow it during the production to maintain the product's stability and traceability. Company has gotten 15 patterns, and won certificate of national high-tech enterprise in 2011.