1, controller board with red oil 2, experienced design and copy service 3 ... QC control PCB Specification providing OEM service to all sorts of printed circuit board assembly 1 Layer 1-30 layer 2 Material FR ... Halogen Free,FR-1,FR-2 3 Board thickness 0.2mm-7mm 4 Max.finished board side 1500mm*500mm 5 Min.drilled ... CQC,SGS 15 profiling punching Routing,V-CUT,Beveling printed circuit board pcb board factory