... ,3M ,Nicomatic.B. Dimension : According to customer 's drawing or design ,OEM design.C. Color: Pantone and Ral color match system.D. constrution ... .Our engineer will work with customers and reommend specail constrution design to meet customer's desires ,such water proof ,dust proof ... : 20G, max (10~200Hz,Mil-SLD-202,M204.Condition B) OEM Membrane Keyboard with Kingbright LED