Zhejiang TTN electric Co.,Ltd ,founded in 1994 year,already have 20 years production experience.The enterprise products through ISO9001: 2000, CCEE, CE certification , through the national ISO14001:2004 environmental management system certification .Factory covers an area of 33,000 square meters,also is National high-technology enterprise. The company mainly produces the voltage stabilizer/regulator /AVR, the electronic calendar,UPS,Power Supply Switch,Power Inverter ,Solar System and so on.