... ISO9001-2000, ISO14001Our Manufacturing Capability for PCB BoardMaterial type: Ployimide ( PI ), Ployester (PET), FR4Surface Treatment: immersion gold,OSP, immersion tin, ... /3 OZ to 2OZ items technical index base material Polyimide (PI), polyester (PET), FR4 layerSingle-layer, double-layer, multi ... Drilling: 0.15mm/0.004’’Punching: 0.5mm/0.02’’ Hole dimension tolerance±0.05mm(2mil) Outline tolerance±0 ...