... environmental safe material, non-toxic, smooth feel, excellent transmission. The hardness of silicone rubber can be graded between 30 to 80 shore ... A depending on customers' requirement. We can do any kinds of keypads, including P+R keypads, silicone and rubber keypads, ... device. 3. Surface Processing:We also can deal with the surface of the keypad with laser, PU coating, epoxy resin coating, silk ...