... of ballasts also get ROSH and PSE.Our Metal Halide Electronic Ballast can Match the international brand lighting source and china mainland ... replace frequent maintenance, easily damaged lampsOrdinary electronic ballast50°C0.5~0.6Less or no1,A fragile, short life 2,lumens low ... voltage surges and temporary voltage is too high. 6, has a better fire performance, lamp kept at low temperatures. 7, ...