Film switch is a combination of film materials, before the combination of film materials, the material is required to print, printed into the required pattern, the required layout, the desired performance and effect.
Because the upper film panel pattern of the film switch is silkscreened, if the use of reverse printing that is all right, if it is frontal printing, then the ink will soon be corroded, after all, the operator in the course of operation, is focused on the work, the operation with a point of corrosive substances, is normal, but, Then at this time the silk printing bar your ink, can resist these corrosion will not bring harm to the panel.
