... circuit are also used, which is helpful to improve the lamp life and maintain lumen rate. For start-up circuit, by ... from some gas discharge lamps like high-pressure sodium lamp, metal halide lamp, etc.4.Long life, slow light decline: The average ... ×72cmWeight:6kg75W-150W3300K-6000KUsed for road, landscape, courtyard, oilfield, terminal station, square, sports sites and so on. Street light HID light ...