... price 3.ROHS, UL, ISO9001-2000,ISO14001 1. double-side fpc with PI stiffener for digital cameras2. high ... technical index base material Polyimide (PI), polyester (PET) layerSingle-layer, double-layer, multi-layerCopper thickness12um, 18um, 35um, 70umWorking panel size400mm* ... the quality during manufacturing process instead of inspection double sided flexible digital camera pcb board with PI stiffener