4 Layer rigid PCB 1.4 Layer rigid PCB 2.Layer:1-35, 3.good quality and reasonable ... .UL,ISO9001,ISO14001,TS16949,CE,. 4 Layer rigid PCB 4 Layer rigid PCB4 Layer rigid PCB 1.Our products are applied extensively to ... .0oz10Solder mask colorgreen/black/white/red/blue/yellow11Inner packingVacuum packing,Plastic bag12Outer packing standard carton paking13Hole tolerancePTH:±0.076,NTPH:±0 ...