We one of the biggest manufacturer and very famous in China. 1.material (PE, PC) 2.Adhesive ... used are Rohns compliant 3.Our engineer will work with customers and reommend specail constrution design to meet ... of assembly,such as membrane switch and touch screen with FPC, PCB ,silicone rubber ,metal backer ,plastic ... (10~200Hz,Mil-SLD-202,M204.Condition B) OEM Membrane Keyboard with Kingbright LED