1)had passed ISO 9001:2000 and CE certificate. 2)SVC single phase voltage stabilizer; 3)it is used in home SVC Servo Motor Voltage Regulator Stabilizer Application: For office equipment, testing equipment, medical equipment, industrial automation equipment, household appliance, lighting system, communication system, etc, such as TV-SET,HI-FI,DVD, FAX, Copy machine, Satellite decoder, Printer, ...