On December 25, 2023, the China Chemical Safety Association (CCSA) released the T/CCSAS 047-2023 Technical specification for coding and labeling of hazardous chemicals, which took effect immediately. It is a group standard in regard to the coding and labeling of hazardous chemicals. Specifically, it details the coding objects for labeling hazardous chemicals, coding principles, coding structure and parsing, information labeling, and use requirements, etc. This document applies to the coding of hazardous chemicals and labeling of them during production, storage, transportation, operation, use, and other stages.