China has implemented Global Harmonized System of Classification and Labelling of Chemicals (GHS) since 2008 by adopting the 2nd revision of UN GHS. The implementation is progressing slowly but surely with a batch of national standards concerning classification, labelling and hazard communication updated or newly formulated to conform with the 4th revision of UN GHS. The most important ones are GB/T 17519-2013 (SDS compilation guidance) and GB 30000 series (rules for classification and labelling).