Wikipedia
UNSPSC
The United Nations Standard Products and Services Code (UNSPSC) is a taxonomy of products and services for use in eCommerce. It is a four-level hierarchy coded as an eight-digit number, with an optional fifth level adding two more digits.
Version 16, released in 2014, contained over 50,000 commodities. The latest release of the code set is 19.0501 .
The UNSPSC competes with a number of other product and commodity coding schemes, including the European Union's Common Procurement Vocabulary, Germany's Eclass, and GS1's Global Product Classification.