Shanghai Beiyou Machinery Equipment Co.
Gaoji International Meters (Shanghai) Co.
Shanghai Lektronix Balancing Machine Co.
Shanghai Leigh Balancing Instrument Co.
Shanghai Pudong Gaoqiao Testing Machine Factory Co.
Shanghai Jianping Dynamic Balancing Machine Co. Ltd.
Shanghai Zhongke Balancing Machine Co.
Shanghai Oucheng Balancing Machine Co.
Shanghai Huaye Test Equipment Co. Shanghai Shenchao Dynamic Balancing Machinery Manufacture Co.
Shanghai Shenman Dynamic Balancing Machine Factory
Shanghai Shenzhong Balancing Machine Manufacture Co. Shanghai Lingling, Shanghai Mailing, Shanghai Collar, Shanghai Shangyang (foreign) 。。。。。。。。