One of the major function of a chamber of commerce is to

A chamber of commerce is an association of businesses and organizations that work together to promote and protect trade, industry, and agriculture. One of its major functions is to provide a platform for businesses to network and collaborate with one another. The chamber of commerce also serves as an advocate for its members by representing their interests to government agencies and other organizations. Additionally, the chamber may provide services such as advising members on regulations of other countries, settling disputes that arise out of trade, and publishing books and periodicals desired by members.