Shouning Songyan Electric Apparatus Co.,Ltd: SONGYAN ELECTRIC APPARATUS CO.,LTD.(Fu jian) founded in 1988, is an export-oriented company who specialized in the field of voltage regulator(voltage stabilizer,ac voltage regulator,automatic voltage regulator). Our company has been certified with ISO9001:2000 Quality System and the products have been certified under CQC safely certification,We strictly in accordance with national and international standards organization ofproduction. Our main products including:DBW、TM、TSD、ACH、SVR、SVC、HDN ...