1.2L led traffic light PCB; 2.good quality,reasonable price; 3.quicker delivery; 4. ... /CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm-3.0mm,+/-0.1mm(tolerance)Copper Thickness1/2OZ ... SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! led traffic light pcb