Yiyen Electric Technology Co.,Ltd is a specializing in electrical power supply.We provide a wide range of products for electric power supply systems,communication systems and automatic control systems.Our primary products include automatic voltage regulators,uninterruptable power supply inverter,battery chargers and solar charge controllers, transformer.      Yiyen AC voltage regulators are produced with strictest standards and have high reliability. They are commonly used in industrial and mining enterprise, oil field,railways,as well as elevator lighting or anywhere need a stable power supply.Inverter is widely used to convert direct current to alternating current or used in solar energy systems.UPS is used primarily to provide emergency power where utility power is not available.As a result of our attention to product quality and reliability,we achieved ISO9001 and CE certificate,that has helped our products to gain popularity.    Years of specialized production has made our products best-selling in the world market,like Russia,Southeast Asia a well as Africa,Mid-East regions,and have enjoyed good reputation from the customers. Yiyen will be your best partner.