ZHEJIANG GONGZHENG AUTO PARTS FACTORY is professional air brake valve manufacturers and truck tractor trailer air brake components suppliers in China which was established in 1990. It is an enterprise that produces air brake valves for brake systems of commercial vehicles. Its leading products have been assembled and used by a number of OEMs including China National Heavy Duty Truck, Second Automobile Dongfeng, Beiqi Foton and JAC Heavy Truck, and exported to Southeast Asia, America
