Founded in 1988, Songyan Electric Apparatus Co.竊�td.is a company specialized in manufacturing automatic voltge regulator with 20 years of experience.we have got the CE and ISO9001 quality certificate.Our main products including Servo micro-motor type, Relay type AVR,UPS , Inverter welding machine,etc. our products enjoy the popularity all over the world, especially Russian竊�astern Europe,South Asia, Middle East,Africa,etc.