The materials are white, black, blue, green, beige plates and bars, hard, friction coefficient, good fatigue properties, high toughness and crystallinity on, pressure resistant, high tensile strength, elastic modulus, number, temperature, suitable for large components, widely used in industry to create all kinds of machinery, instrument engineering, electrical components, such as bearings, gears, pump impeller, fan blades, oil gasket, valve parts, beverage and food machinery , the use of abrasion resistance, impact resistance, non-adhesive, non-toxic health, production job board, conveying screw, play clean and convenient, long life, anti-mold effect, but also for other parts of Health, were kind of bush, etc. .