UK AMBA company AMBA7000 (HY-7000) light exposure, the quality and stability up to 800 hours of energy without attenuation, for the U.S. OLEC, COLIGHT, MIMIR, DUPONT co-Rong Hong Kong, Japan, ORC, USHIO, HITECH, Chi San, Kwan Yi, Taiwan, three British, Jane, Baoding Orient, such as water, air-cooled 7KW exposure, is best quality on the market the most stable 7KW exposure light.