... soon. We will use the 150W to modify for you.20W,35W,70W,150W,250W for Metal Halide lamps with CE, ROHS,ISO9001 in ... low self heating. 4,Abnormal lamp automatically cut off the power 5, with overvoltage protection, to prevent a short time voltage surges ... , electromagnetic radiation is low, around electrical equipment does not affect the normal work. 20W Ballast with Cable for Metal Halide Lamp