SMS ELECTRIC CO., LTD ZHENGZHOU is a China-based company principally engaged in the research, design, producing and sale of electricity metering instrument. The Company operates through three main segments. The Electric Meter Calibration segment is mainly involved in the manufacturing and sales of standard test devices, automatic calibration pipeline systems, other calibration and test devices. The Electric Energy Meter Ancillary Instrument segment is mainly involved in the research, development and manufacture of meter reading terminal, intelligent storage management instrument and current transformer. The Other Business segment is primarily involved in the maintenance of instrument as well as the provision of related after sales services.