In the import and export declaration process of chemicals, enterprises face two major challenges: first, there are a wide variety of chemicals, complex components, diverse names, and difficult attribute discrimination; Secondly, it is difficult to master the highly specialized customs HS classification rules, resulting in the inability to accurately declare HS codes to customs. For a long time, how to accurately declare has been a bottleneck and pain point that many enterprises have encountered. This requires enterprise customs personnel to not only be familiar with the relevant commodity situation, but also be familiar with various customs regulations.