... mm 3. Competitive price with good quality 1. FR4+PI material2. 6L 1oz copper, Board Thickness 1.6mm3. ... ISO9001-2000, ISO14001Our Manufacturing Capability for PCB BoardMaterial type: Ployimide ( PI ), Ployester (PET), FR4Surface Treatment: immersion gold,OSP, immersion tin ... 1/3 OZ to 2OZ items technical index base material Polyimide (PI), polyester (PET), FR4 layerSingle-layer, double-layer, multi ...