HS Classification is classifying all exporting and importing goods trading around the world into a certain heading according to the Harmonized System(HS) developed by the World Customs Organization(WCO). HS(Harmonized Commodity Description and Coding System) code is an item classification code assigned to exporting and importing goods based on International Convention on the Harmonized System. The 6-digit code is an international code used worldwide. More subdivided 7-digit to 10-digit code can be determined by each country at its discretion. Korea uses a 10-digit code, named HSK(HS of Korea).