... in China. 1.material (PE) 2.Adhesive 3M 3 Kingbright LED A. Material : Rohs compliant material ,for example ,Autotype ,3M ... also do different types of assembly,such as membrane switch and touch screen with FPC, PCB ,silicone rubber ,metal backer , ... Degree CentigradeHumidity: 90%~95%, 240 hoursVibration: 20G, max (10~200Hz,Mil-SLD-202,M204.Condition B) Push Button Membrane Switch with Gradient color