5.A grade tri-phosphor fluorescent powder A级三基色粉 6.high lumen efficiency over 60lm/w 高光效达60lm/w 7.much lower heat than incandescent or halogen bulbs 产生的热量比白炽灯和卤素灯更低 8.most popular shape and dimension in the market 在市场上是比较流行的款式 9.energy saving and cost...