The Harmonized Commodity Description and Coding System covers 5,000 kinds of goods and 9,500 subheadings.

The CN, in turn, is based on the Harmonized Commodity Description and Coding System used worldwide.

The number 4405.00 is applied to wood wool by the World Customs Organization in the Harmonized Commodity Description and Coding System (HS).

The 4-digit harmonized commodity description and coding system, otherwise known as the harmonized system (HS) code for "fine" art is 9701, which is classified as "Paintings, Drawings and Pastels, Executed Entirely By Hand."