flexible printing circuit 1, High quality silver ink 2. 100% function test 3. pass ISO9001: 2000 and ISO14001.SGS.ROHS Flexible printing circuit A : Structure of menbrane circuit board. 1. Materials: The most commonly used base materials are polyester (PET) and polycarbonate (PC). 2. Rear Adhesive: 3M 467MP, 3M 468MP, etc. 3. Standard Tolerances: +/-.010 inch. 4. Matching color: Pantone and RAL ...