#cpc hashtags are systematically defined for each product section, division, group and class of the Central Product Classification (CPC) Version 2.1.

There are hashtags at four levels, for product sections, divisions, groups and classes.

Product section hashtags

A product section hashtag has the structure #cpc0 to #cpc9. The last character is the numeric section code 0, 1, 2, … until 9.

In country specific product section hashtags the two character ISO code of the country is added to the section hashtag, for instance as in #cpc0TZ for Tanzania with TZ as country code:

Product division hashtags

Product division hashtags have the form #cpcnn with nn the code of a CPC product division, for example as in:

Product group hashtags

Product group hashtags have the form #cpcnnn with nnnn the code of a CPC product group.

Product class hashtags

There is a product class hashtag for each of the xx classes in the CPC classification. They have the form #cpcnnnn, where nnnn is the CPC class number. If you are not sure whether or not a topic belongs to a product class, then check the source document: Central Product Classification (CPC) Version 2.1.

Per country a distinct hashtag is constructed for each product class by adding the country code.

Product subclass hashtags

These are not provided as yet.

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This class in the classification of its order

The (ontological) order of #CPC hashtags is the Techno Order.