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This standard specifies the traceable code principles, traceable code structure, coding rules, information identification, use and maintenance requirements, quality control, etc. used to identify the safety information of hazardous chemicals. It is applicable to the identification of the production, storage, use and operation of hazardous chemicals, and is applicable to the hazardous chemicals included in the Catalogue of Hazardous Chemicals (2015). It does not apply to hazardous chemicals transported by pipeline and oil tankers, bulk chemical tankers and liquefied gas tankers.