... corrosion and anti-solvent properties Pall ringLadder rasching ring absorbs the ring, while the characteristics of BaoErHuan improvement, highaspect ... mass. Our factory using polypropylene raw material ladder and ring, qualitative light, good toughnessand impact resistance, non-friable, ... of various medium temperature for 60-150 degrees Celsius.Ring widely used in petroleum, chemical, alkali, gas, ...