All licenses authorizing dental service plan corporations to transact business in this state shall be renewable on April 1 of each year, subject to the approval of the commissioner. Any dental service plan corporation licensed to do business in this state under this chapter shall obtain from the commissioner a certificate of authority for every agent writing or soliciting dental service plan contracts for the corporation in this state, and the certificate shall be renewable January 1 of each year, subject to applicable sections of the insurance laws, including the revenue law of this state for life and health and accident insurance agents.