... cube lens series. It usually looks like board or block and its density is 3.14~3.17. ApplicationHalogen powder is usually ... of fluorescent lamp with the 6400K, 2900K, 3200K, 5000K and 2700k color temperature. It has strong ability of fighting 185nm ... high energy ultraviolet, good thermal stability and can maintain high brightness yet in 120 °C, ApplicationExtensively used ...