... , concave led, rectangle led3 Available Size; 2mm,3mm,5mm,8mm,10mm,20mm4 Lens type;water clear, color transparent, colored ... reduction in power cost10 No RF interference11 Maintenance free, easy installation12 Long life 100,000+hoursSuperior ESD ... friendly13 Excellent performance14 Good service15 Customaries design is available, free combination Application; Advertising signs, circuit board, computer, ...