... UL, ISO9001-2000, ISO14001Our Manufacturing Capability for PCB BoardMaterial type: Ployimide ( PI ), Ployester (PET), FR4Surface Treatment: immersion ... tin, plating goldBoard Panel Size: 400mm*610mmBoard Layer: 1L-4LBoard thickness: 0.1mm to 0. ... material Polyimide (PI), polyester (PET), FR4 layerSingle-layer, double-layer, multi-layerCopper thickness12um, 18um, 35um, 70umWorking panel size400mm* ...