As a professional manufacturer of uv ballast,hid ballast,led ballast,electronic ballast, Beijing Charmsstone Electronics Technology Co., Ltd. is devoted to developing the high-quality electronic ballast products. Our products are widely used in the lighting system (such as urban roads, tunnels, ports, markets, supplementary lighting on plants and UV products) and special lighting places. We have a superior R&D team with many years research and development experiences in this field. We are dedicated to being the world's famous electronic ballast customers preffered innovative supplier.