Qingdao Laifeidi lighting Technology Co., Ltd. is a high-tech Corporation, specializing in lighting researching, producing, selling and servicing, with its registered capital of 12.8million, covering an area of 8186.3㎡, including workshop area 8,020sqm. Laifeidi is especially famous for its brands "Yuhui" and "RJ". We mainly produce indoor and outdoor lightings, Patent golden LED drive power supply, electronic ballasts, energy-saving lights\SOOOR, as well as industrial lightings, stadium lights, street lights, floodlights, indoor and outdoor display screens. Laifeidi has received seven patents for both invention and utility for its advanced technology, with self-owned intellectual property .Especially the patent product "LED all series constant current/constant temperature drive power supply (Patent NO.: ZL2009 2 0018682.3)" is more stable and energy-saving than the normal ones, fundamentally solved the questions of temperature-rising and light degradation, bringing increase of the ...[More] span of the LED products. The new generation of electronic ballasts with high efficiency, energy-saving\and long-life have been certified CE and ROHS after detected by National Lighting Test Centre(Beijing), also been recommended as the preferred products and best alternative to traditional Inductive ballasts by China association of lighting Industry.