During past 70 years we have continuously kept and developed the true originality of technology as well as upgradability through R&D activities in the field of AC & DC power sources.IEC, established in 1946, is the first & oldest transformer manufacturer in Korea. With our experiences and accumulated technology, our product as followings are widely delivered over 40 countries.1. Transformer2. Voltage Regulator3. UPS, Battery Charger, Rectifier, InverterIn addition, We was selected as the UPS official company at the 1986 Asian Games, the 1988 Olympic Games, and succeeded in localizing the safety grade UPS at the nuclear and thermoelectric power plant. In 2011, we became the first domestic electric power electronics company to be awarded to Westinghouse in USA.