1, controller board with red oil 2, experienced design and copy service 3, fast delivery 4, strictly QC control PCB Specification providing OEM service to all sorts of printed circuit board assembly 1 Layer 1-30 layer 2 Material FR-4,CEM-1,CEM-3,Hight TG,FR4 Halogen Free,FR-1,FR-2 3 Board thickness 0.2mm-7mm 4 Max.finished board side 1500mm*500mm 5 Min.drilled hole size 0.5mm 6 Min.line width 0. ...