The Commission shall not revoke or suspend the license of any person licensed under this chapter upon any of the grounds set forth in § 6.2-2018 until it has given the licensee 21 days’ notice in writing of the reasons for the proposed revocation or suspension and an opportunity to introduce evidence and be heard. The notice shall be sent by certified mail to the principal place of business of the licensee or other address authorized under § 12.1-19.1 and shall state with particularity the grounds for the contemplated action. Within 14 days of mailing the notice, the person or persons named therein may file with the clerk of the Commission a written request for a hearing. If a hearing is requested, the Commission shall not suspend or revoke the license except based upon findings made at such hearing. The hearing shall be conducted in accordance with the Commission’s Rules.