Sichuan Tongyi Heat Equipment Co., Ltd. is one of the leading international manufacturers of wall mount gas boiler heat exchanger & condenser. Found in 2004 (used to be Sichuan Tongyi Technology Co., Ltd.), our company has outstanding quality, professional sales & service team and generates more than 15 million US dollars one year. With more than 60 types of heat exchangers, 55 percent of sales are generated abroad. We are an international oriented company. We are the member of Gas ...