1.2L led traffic light PCB; 2.good quality,reasonable price; 3.quicker delivery; 4. ... FR-4 / Lead free Materials(RoHS Compliant)/CEM-3/CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0 ... Tolerance±0.1mmPTH/NPTH Tolerance±0.15mm(dia.=0.4-1.4mm)Pad Tolerance±0.1mm(dia.≥0.6mm)Pad to ... %(tolerance) Certificate SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! led traffic light pcb