can be made in high uv output uv ,the life time can reached 13000 hours, have passed CE ,ROHS ,ISO9001! Power:4w,6w,8w,12w,14w,21w,28w.Characteristic:uv lamp emit a large amount of UV at 253.7nm, which have excellent germicidal effect . These lamps have similar structure and electrical characteristics with those general fluorescent lamps used for illumination . These lamps use ultraviolet glass, ...