... /C fast lead time in 8days pcb board Specificationproviding OEM service to all sorts of electronic ... circuit board assembly1 Layer 2-18 layer2 Material FR-4 ... Free, FR-1, FR-23 Board thickness 0.2mm-4mm4 Max.finished board side 800*508mm5 Min.drilled hole ... paking13 Hole tolerance PTH:±0.076, NTPH:±0.0514 Certificate UL, ISO9001, ISO14001, ROHS, CQC, SGS15 profiling ...