Detailed Product Description We would like to introduce ourselves Zigong Tongda Machinery Manufacturing Co., Ltd. China Tongda is the market leader in China, having captured more than 50% CNG market in China. Tongda have manufactured near 800 unit and 60 different models of CNG Compressors of various capacities ranging from 250M3/hr to 3000M3/hr and related equipments for CNG station, like dryer, ...