Electrostatic spraying is to spray the powder paint to the product through electro static processing and to roast for some time to form the coating. Electrostatic spraying equipment-electrostatic plastic spraying machine is used to spray the powder paint to the work piece surface. Under the effect of static, the powder will be adsorbed onto the surface of the work piece. Thus the powder coating is formed. Through flowing and solidifying under high temperature, the powder coating will become different final coating. Comparing with paint, the spraying result is superior at mechanical strength, adhesion, anti-corrosion and aging resistance.