... for various applications7, Silk screen printing, spray coating, laser etching, back-lighted, hard/epoxy coating keypads8, Keypad surface with ... PU coating9, Smooth and hard touch feeling10, Automatic potting process to add resin on each key top11, Combination of ... PC and rubber keypad12, Automatic painting and laser etching process13, Excellent graphic contrast14,Increase readability in badly lit ...