... our website: en.gnlight.cnAll of our product can be customized. 20W,35W,70W,150W,250W for Metal ... electronic ballast50°C0.5~0.6Less or no1,A fragile, short life 2,lumens low coefficient 3 ... the power 5, with overvoltage protection, to prevent a short time voltage surges and temporary voltage is ... too high. 6, has a better fire performance, lamp kept at low temperatures. ...