It shall be unlawful for any person, firm, or corporation to operate a dairy products plant, including milk and cream stations, or freeze or manufacture frozen desserts, or operate a condensery depot within the State of Arkansas without having first secured a permit, except as provided for in § 20-59-244, signed by the Secretary of the Department of Health and bearing the seal of his or her office. The permit shall be displayed conspicuously at the place of business.