... we used are Rohns compliant 3.Our engineer will work with customers and reommend specail constrution design to meet customer's desires ... also do different types of assembly,such as membrane switch and touch screen with FPC, PCB ,silicone rubber ,metal backer ,plastic bezel ... : 20G, max (10~200Hz,Mil-SLD-202,M204.Condition B) LED Membrane Switch Keyboard With Metal Dome and Berg Connector