This document stipulates the technical requirements, test methods, inspection rules, acceptance and quality assurance periods, as well as signs, labels, packaging, storage and transportation of modified Gumalon petroleum resin. This document applies to modified coumaron petroleum resin for the tire industry, which is obtained by technical treatment of distillation and reaction residues generated during the production of 2-chloro-5-chloromethylpyridine (imidacloprid, acetamiprid intermediates). .