... .material (PE, PC) 2.Adhesive 3M 3 Kingbright LED A. Material : Rohs compliant material ,for example , ... Rohns compliant 3.Our engineer will work with customers and reommend specail constrution design to ... ,dust proof and anti corrasion and so on 4. Strick quality inspection ,100 % funtional tesiting ... of assembly,such as membrane switch and touch screen with FPC, PCB ,silicone rubber ,metal backer , ...