A registered identification number (or RN) is a number issued by the Federal Trade Commission

Federal Trade Commission

The Federal Trade Commission is an independent agency of the United States government, established in 1914 by the Federal Trade Commission Act...

, upon request, to a business residing in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 that is engaged in the manufacture, import

Import

The term import is derived from the conceptual meaning as to bring in the goods and services into the port of a country. The buyer of such goods and services is referred to an "importer" who is based in the country of import whereas the overseas based seller is referred to as an "exporter". Thus...

ation, distribution

Distribution (business)

Product distribution is one of the four elements of the marketing mix. An organization or set of organizations involved in the process of making a product or service available for use or consumption by a consumer or business user.The other three parts of the marketing mix are product, pricing,...

, or sale of textile

Textile

A textile or cloth is a flexible woven material consisting of a network of natural or artificial fibres often referred to as thread or yarn. Yarn is produced by spinning raw fibres of wool, flax, cotton, or other material to produce long strands...

, wool

Wool

Wool is the textile fiber obtained from sheep and certain other animals, including cashmere from goats, mohair from goats, qiviut from muskoxen, vicuña, alpaca, camel from animals in the camel family, and angora from rabbits....

, or fur

Fur

Fur is a synonym for hair, used more in reference to non-human animals, usually mammals; particularly those with extensives body hair coverage. The term is sometimes used to refer to the body hair of an animal as a complete coat, also known as the "pelage". Fur is also used to refer to animal...

products.

Such businesses are not required to have RNs. They may, however, use the RN in place of a name on the label or tag that is required to be affixed to their products.