... same time.for example, we have the good driver and the PF is bigger than 0.95.of ... ,we also have the normal quality which made by normal driver and the PF is around at 0.6 ... by good price,then you can satisfied with different customers requirements from different prices. 6.T/T,Western Union,PayPal payment way ... white,warm white,cool white,red,green,pink,blue,yellow.More questions pls feel free to email ...