GB 19601-2004 is an important standard to ensure the safety of dyestuff products. It clearly stipulates the limit value of 23 harmful aromatic amines in dyestuff products, and strictly limits the content of harmful substances to ensure safe use. At the same time, the standard elaborates the method of determining these harmful aromatic amines, covering Sample Handling, testing instruments and operating procedures. This standard provides a key mass control basis for the production, sales and use of dyestuff, effectively preventing dyestuff containing excessive harmful substances from entering the market, and effectively protecting consumer health and environment safety.