... ceiling down light 1w,2w,3w;4w,5w;6w,7w;9w;12w;15w with CE,ROHS certificate 1w,2w,3w,4w,5w,6w,7w,9w,12w,15w all ... saves 50% - 70% electricity cost comparing with high pressure sodium lamp. We are specializing in outdoor and indoor light products. Mainly ... saving system, saving 50% energy than the conventional Metal halide lamp, Sodium Light or HPS lightApplication:1. Factories2. Gymnasiums3. Yards4. ...