The GB 20594 was referred to  and evolved from the GHS standard in its compiling process by the AQSIQ and SAC, however,  there are some minor distinctions between them.

It detailed the classification, precautionary labeling and precautionary statements of chemicals for serious eye damage/eye irritation.

• expounding the determination and classification processes for the chemicals of serious eye damage/eye irritation, and classifying them into 3 categories by their different hazardous properties;

• For each of the category, elements of the precautions such as diagrams, designations and hazardous statement have been demonstrated;

• setting collocation of the precaution elements;

• providing precaution statements for the substance or mixture, such as physical hazard;

• precautions of health hazards from misuses and exposures;

• measures for accidental treatment;

• Emergency  treatment;

• measures for environmental protection and disposals;

• specific statements for the consumers.