Last updated on April 19th, 2022 - 2022 Harmonized System (HS) updates: What you need to know to stay compliant What is the Harmonized System? The Harmonized System is a system that was developed by the World Customs Organization (WCO) in 1988 to classify goods in shipments entering WCO member countries. Products are classified with Harmonized System (HS) codes. This means products are given a...