As the distributor of BERSN Opto-electronics Company, we are in charge of the sales deparment of BERSN. All the products made by BERSN are: High efficient solar street lighting system and solar / wind street lighting system. 20w-1000w Electronic ballast (DC 12V-120V and AC 110V-220v) for HPS, MH and LPS. Electronic ballast for high pressure sodium and low pressure sodium and metal halide lamps. Electronic ballast for DC Fluorescent lamps. We also OEM for the above products.