Shanghai Volkswagen united Yizheng plant corporation
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Changsha a joint project
October 8, 2014, a joint project for changsha welding workshop, provides 1600 sets of 160 watts of sunflower high shed light, workshop of 12 to 15 meters high, the average illuminance on the whole workshop more than 300 lux, single lamp lighting efficiency is more than 120 lumens per watt, the whole lamp color temperature 6500 k, the power efficiency is more than 90%, the power factor of 0.92
