... :anti-acid,anti-alkali,rust prevention,pressure-proofspecification:small diameter:just 20mm,less than 0.5kghuge diameter: ... and dyeing, chemical fiber, paper, packaging, plastics processing equipment and other contact with hydrocarbon oil and fat occasions ... inert and non-adhesive plastic for thermal processing of viscous products, such as rolling of polyethylene, embossed, printing and dyeing and ...