... design 3.85lm/w, 3 years warranty the newest design high power 60-240w gas station lampmore ... VC(Vapor Chamber)thermal design. Substrate chip temperature is lower than copper, and coefficient of ... conductivity is twice as much as the copper,less lower junction temperature. VC is a phase change ... a series of bad condition include the highest and lowest temperature, so the quality is very stable. 9. ...