EMI/EMC Noise Filter | Certified Noise Filter Inverter Korea Welcom to OKY LTD.OKY is leading EMI/EMC Filter developing company in Korea.Since 1992, we are developing EMI/EMC filters and suppling them to our customers.Also we developed power quality solutions, such as DVC (Dip-sag voltage compensator) and Published 8 Years Ago by Oky |