All licensed publicly owned or nongovernmental corporations or firms established in accordance with the Company Act or Business Registration Act should join the local commercial trade association and become member within one month following the establishment; multi-occupation corporations or firms should join at least one of the commercial trade association and become member unless otherwise stipulated by law.
The above-mentioned members should send member representatives to attend the meetings of commercial trade association.

Factories with retail department are also considered commercial corporation or firm.

Corporation or firms should withdraw from commercial trade association when they stopped business, move out of the ruling area of the commercial trade association, or subject to the penalty of permanent suspension.

Each corporation or firm send one to seven member representatives to commercial trade association in proportion to the level of its membership dues which is stipulated in the articles of the commercial trade association.

Member representatives shall be principals, managers or staff of the corporations or firms who currently hold the posts, and they must be adult.
Corporations and firms may reappoint their member representatives at any time according to their needs, however the formerly appointed member representatives lose the representative qualification once new representatives are appointed.

People who have any of the following situations cannot become member representatives:
1. Those in the execution of verdict after committing crimes.
2. Those who have been deprived of public rights and not yet restored related rights.
3. Those who have been placed under custodianship and such custodianship has not yet been withdrawn.
4. Those who are charged with bankruptcy and not yet restored related rights.
Appointed member representatives who have any of the above-mentioned situations lose their representative qualification automatically and the vacancies are to be filled by newly appointed member representatives.

Member representatives have voting rights, rights to vote, rights to be elected, and right of recall, one vote for each member representative.

When member representatives cannot attend the general meeting in person, they should entrust other member representatives in written form to deputize their votes. Each member representative can only deputize one member representative, and the number of member representatives who deputize other member representatives should not exceed half of the number of attending member representatives.