... ,35W,70W,150W,250W for Metal Halide lamps with CE, ROHS,ISO9001 in China. Some of ballasts ... , moisture, lightning,Anti electromagnetic interference function.1, high quality, high reliability, long life. 2, its own power ... Abnormal lamp automatically cut off the power 5, with overvoltage protection, to prevent a short time voltage ... 150W MH Ballast for HID Spotlight with Good Quality from Manufacture