... -20 layers2Max. Board size2000×610mm3Min. board Thickness2-layer 0.15mm4-layer 0.4mm6-layer 0.6mm8-layer 1.5mm10-layer 1.6~2 ... (2mil)9Hole dia. Tolerance (NPTH)+0/-0.05mm(2mil)10Hole position deviation±0.05mm(2mil)11Outline tolerance±0.10mm(4mil)12Twist & Bent0.75% ... , Plating gold20MaterialsFR4,H-TG,Teflon,Rogers,Ceramics,Aluminium, Copper base 4 layer sided cell phone pcb design and copy service