Hydroxyl terminated polyester as binder was based, crosslinking curing effect, prepared outdoor super weatherability type special effect powder coatings. It is suitable for all kinds of metal workpiece, and it has excellent boiling resistance, chemical corrosion, good adhesion, etc. and it meets export requirements. Its unique texture gives people different visual feelings. It makes up for the ordinary sand surface difficult to clean the disappointment. Decorative, excellent temperature resistance, light resistance, weather resistance and stain resistance, good ventilation function, it is suitable for cast iron, cast aluminum, galvanized steel, can conceal rough workpiece surface defect, provide the appearance of fashion. Painting is low cost, can provide excellent visual, improve customer product added value.