详细描述
P + R Keypad is a combination of plastic and silicon rubber . P for Plastic, R for Rubber .Plastic Keypad of injection molding, through printing or spray , Laser etching, printing, etc., to form different colors, different fonts or patterns .The silicone lining of the oil pressure ,them are commonly used in : a dictionary key, a learning machine key, a phone button, a bank password, and a car button.
