Mich. Comp. Laws § 454.201: Builders and traders exchanges; incorporation, purposes.

Sec. 1.

That any number of persons, not less than 3, may associate themselves together and become incorporated as a builders or a builders and traders exchange for the purpose of providing and regulating suitable rooms or places of meeting; to promote mechanical and industrial interests, to inculcate just and equitable principles of trade, to establish and maintain uniformity in commercial usages, by rules and regulations; to acquire, preserve and disseminate valuable business information; to adjust differences and settle disputes between members, or between members and others; and for other purposes conducive to the interests of members thereof.