These are made up of people who work in a certain industry, market, or occupation, and can be local, national, or international in scope. They typically gather and publish data on their industries, some of which may be available for no charge on the association website. Trade associations can be located by methods such as guessing their name in a Google search - "national restaurant association" - or looking in a directory of trade associations.
Examples of Associations Related to Food or International Trade: