1.100% silicone,non-toxic 2.Ware-resisitance,durable 3.Good conductive performance 1.100% silicone,ware-resisitance,durbale,harmless ... body2.Applications:mobile phone,computer keypads,calculator,hand-held games.remote control for TV or air-condition.etc3.All color,design,style ... +/-5 shore A,for some special products,we can reach +/-3 shore A tolerance.5.About the key coating,epoxy-coating ...