Trade Associations are a useful resource to locate trade contacts and for expanding your business abroad. An industry trade association participates in public relations activities such as advertising, education, but its main focus is collaboration between companies, or standardization. In countries with a social market economy, the role of trade associations is often taken by employers' organizations, which also have a role in the social dialogue.
A company that manufacture similar products and provides similar services belongs to a trade association. These associations to resolve problems between the company members and consumers. Most of them also provides consumer information through publications and websites. If anyone have the problem with the company and cannot resolve it by working directly with that firm, then ask whether the company is a member of an association or not. If don't get any information check to see whether the association is listed. If the association is not included in local library has reference materials to help you find the appropriate contact.