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High-thermal-stability insoluble sulfur which is the first vulcanizing agent choice of radial tires needs to be imported in quantity every year because the high-thermal-stability insoluble sulfur made in China is not as good as that made by internationally renowned companies.In order to regulate technical indicators of insoluble sulfur products and enhance market credibility of high-thermal-stability insoluble sulfur products of China,CRIA Professional Committee of Rubber Chemicals organized relevant member enterprises to draw up the XXZB/ZJ-1201-2013 Association Self-discipline Standard of High-thermal-stability Insoluble Sulfur which would be implemented on January 1,2014.This standard is applicable to the rubber vulcanizing agent——non-oil-filled and oil-filled high-thermal-stability insoluble sulfur.