Application:Home Appliances,Communication equipment,computer keyboard Keypad Button Material:PET,PC,Silicone,Acrylic Design:CAD/AI/CDR format Certification:ROHS,REACH,CE,IS Test:100%QC Material:PET,PC,Silicone,Acryliy Color:According to pantone color number Back-adhesive:3M467,3M468,or others Factory Experience:16 years customized factory. Membrane switch circuit layer using FPC (flexible PCB). Circuit of high precision, the minimum qualifying spacing can do 0.5mm, the resistance value is very low, can be welded LED, resistors, fiber and other small components, stable and reliable performance, long service life.