Greensboro has oen or more trade associations. A trade association is an organization comprising member companies or industries from the same sector. They work on various fronts. In this country, one of the most significant roles of the association in influencing government policies and directives in its favor. It also carries out a number of public relations activities, such as advertising, education, political donations, lobbying and publishing. Another major sphere of activity is the collaboration between different companies to evolve industry or sector-specific standards. Charitable events may also be organized by them in Greensboro. Many such associations are non-profit organizations.