Polypropylene PP polypropylene acid corrosion of mechanical parts stick stick PP polypropylene PP acid corrosion of mechanical parts stick acid corrosion of mechanical parts stick polypropylene PP polypropylene PP acid corrosion of mechanical parts stick acid corrosion of mechanical parts Polypropylene PP polypropylene acid corrosion of mechanical parts stick stick PP polypropylene PP acid corrosion of mechanical parts stick acid corrosion of mechanical parts stick polypropylene PP polypropylene PP acid corrosion of mechanical parts stick acid corrosion of mechanical parts PP polypropylene acid corrosion of mechanical parts stick beige, white polypropylene, the English name: Polypropylene, non-toxic, tasteless, density, strength, stiffness, hardness and heat resistance are superior to low-pressure polyethylene, may be around 100 degrees use has good electrical properties and high-frequency insulation from humidity, but the low temperature brittle, do not wear, easy to aging. suitable for production of general machinery parts, corrosion-resistant parts and insulating parts. Common acid, alkali organic solvents it almost does not work, can be used for utensils. Conventional diameter for 20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,110,120 ...... beige, white polypropylene English name: Polypropylene, non-toxic, tasteless, density, strength, stiffness, hardness and heat resistance are superior to low-pressure polyethylene, can be used at 100 degrees has good electrical properties and high-frequency insulation from humidity. , but the low temperature brittle, do not wear, easy to aging. suitable for production of general machinery parts, corrosion-resistant parts and insulating parts. Common acid, alkali organic solvents it almost does not work, can be used for utensils. Conventional diameter may also be 20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,110,120 ......