All proceedings for the revocation or suspension of licenses of manufacturers, distributors, importing distributors, non-resident dealers, foreign importers, non-beverage users, railroads, airplanes and boats shall be before the State Commission.All such proceedings and all proceedings for the revocation or suspension of a retailer’s license before the State commission shall be in accordance with rules and regulations established by it not inconsistent with law. However, no such license shall be so revoked or suspended except after a hearing by the State commission with reasonable notice to the licensee served by registered or certified mail with return receipt requested at least 10 days prior to the hearings at the last known place of business of the licensee and after an opportunity to appear and defend. Such notice shall specify the time and place of the hearing, the nature of the charges, the specific provisions of the Act and rules violated, and the specific facts supporting the charges or violation. The findings of the Commission shall be predicated upon competent evidence. The revocation of a local license shall automatically result in the revocation of a State license. Upon notification by the Illinois Department of Revenue, the State Commission, in accordance with Section 3-12, may refuse the issuance or renewal of a license, fine a licensee, or suspend or revoke any license issued by the State Commission if the licensee or license applicant has violated the provisions of Section 3 of the Retailers’ Occupation Tax Act. All procedures for the suspension or revocation of a license, as enumerated above, are applicable to the levying of fines for violations of this Act or any rule or regulation issued pursuant thereto.