... the biggest manufacturer and very famous in China. 1.material (Silicone) 2.Adhesive 3M A. Material : Rohs compliant material ,for example ... we used are Rohns compliant 3.Our engineer will work with customers and reommend specail constrution design to meet customer's ... of assembly,such as membrane switch and touch screen with FPC, PCB ,silicone rubber ,metal backer ,plastic bezel and so on. 6 ...