Dongguan, ceiling lamp, ceiling lamp factory in Dongguan, Dongguan City, the preferred Optoelectronics Technology Co., Ltd Astra, the company was founded in 2005, is a subsidiary of Sona Electronics Co., Ltd., R & D, production, sales and all kinds of high-power LED LED lamps as one of the high-tech enterprises. Independent research and development products are fluorescent lamps, lights, ceiling ...