... best quality and lowest price. LED Module: 1.Light source: super bright SMD LEDs 2.High Reliability 3.Competitive ... ,the feature as follows;1.adopt high brightness SMD LEDs as light source, 2.use ultra-thin ... pollution, long working life,6. widely use for backlight of advertisment, channel letter signs, light boxes, billboards, architectural ... ,blue,yellow7. Life span: over 50000h XSH-5050-led module