As required in the Work Safety Law and the Regulations on the Control over Safety of Hazardous Chemicals (State Council Decree No. 591), enterprises must prominently set up precautionary labels in workplaces. In regard to precautionary labels for workplaces of chemicals, an industrial standard AQ 3047-2013 The Rule of Precautionary Label for Chemicals in Workplace was issued and implemented in 2013. It has been ten years since then, the relevant requirements may be outdated. To keep pace with recent version of UN GHS, GB/T 30000.31-2023 is formulated. It specifies the requirements, preparation, and application of precautionary labels for workplaces of chemicals.