Qingdao San'en Electric Power Co., Ltd.

[ Manufacturer Trader ]Main business are DC power supply complete equipment, Storage battery equipment.

Sichuan Xinan Electromechanical Equipment I/e Co., Ltd.

[ Trader ]Main business are Electromechanical, Building material, Insturment and meter and automatic control system

Changsha Daoheng Instrument Co., Ltd.

[ Trader ]Main business are Instruments and meters, Teaching experimental equipment