... , silicon rubber, EL, touch screens and assemblies A. Material : Rohs compliant material ,for example ,Autotype ,3M ,Nicomatic.B. ... 's desires ,such water proof ,dust proof and anti corrasion and so on 4. Strick quality inspection ,100 ... : 10Ω~ 500Ω (Varies from the trace length and material)Insulation Resistance: 100MΩ 100VDielectric: 250 Vrms ( ... 202,M204.Condition B) Copper FPC for Keyboard for Iphone