4 Layer rigid PCB 1.4 Layer rigid PCB 2.Layer:1-35, 3.good quality and reasonable price 3.UL,ISO9001, ... 4 Layer rigid PCB4 Layer rigid PCB 1.Our products are applied extensively to such hi-tech fields such as telecommunication,computer,industrial ... Capability 1layer1-35 layer2MaterialFR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-23Board thickness0.2mm-7mm4Max.finished ...