... China. 1.material (PE) 2.Adhesive 3M 3 Kingbright LED A. Material : Rohs compliant material ,for example , ... water proof ,dust proof and anti corrasion and so on 4. Strick quality inspection ,100 % funtional tesiting ... with FPC, PCB ,silicone rubber ,metal backer ,plastic bezel and so on. 6. We can accept small ... ~200Hz,Mil-SLD-202,M204.Condition B) Push Button Membrane Switch with Gradient color