... .material (PE) 2.3M 467 3 Kingbright LED 4.Berg Connector A. Material : Rohs compliant material ,for example ,Autotype ,3M ,Nicomatic ... and Ral color matching system ,using advanced light box and computer color mataching,we can also do half-tone printing 2 ... ~200Hz,Mil-SLD-202,M204.Condition B) LED Membrane Switch Keyboard With Metal Dome and Berg Connector