... copolymers, such as PE, EVA, CPE, EPDM, EPR, Silicon rubber, Polyurethane rubber, as well as the polymerization initiator for PS. It is ... its resistance to heat, chemical, pressure and cracking, and increase mechanical strength as well. Items First grade Second gradeAppearance Colorless or ... and cable, plastic foams and other products of plastic and rubber. Rubber Crosslinking agent Dicumyl Peroxide