Customs code, namely HS code, is the abbreviation of Harmonized Coding System. Its full name is the International Convention on the Harmonized Commodity Description and Coding System (HS).
Harmonized system code "Harmonized" covers two major classification coding systems: CCCN and SITC, which is a systematic and multi-purpose international trade commodity classification system. It is not only used for customs tariff and trade statistics, but also provides a set of available international trade commodity classification system in invoicing, statistics, computer data transmission, simplification of international trade documents and utilization of general preferential tax numbers.