Hebei Zhengwu International Trade Co. , LTD is one of the biggest manufacturer and trader for brake drums, flywheels, clutch disc, gear rings and water pumps in China, especially brake drums, flywheels & gear rings for heavy- duty vehicles. The company was certified with ISO 9001. OEM NO. Reference NO. Application A B H C I 5336- 3501070 ZW. Z01- 001 Mersedes Benz 420 170 224 313 350