In order to operate a cannery or acidified food processing plant, a person shall obtain a food processing license pursuant to the provisions of Health-General Article, §21-305, Annotated Code of Maryland, COMAR 10.15.04, and this chapter. The Department shall specify on a food processing license issued to a cannery or acidified food processing plant the following type or types of food the licensee is approved to produce: Low-acid canned foods; Acidified foods; Acid canned foods; or A combination of these types. The person-in-charge shall ensure that: Foods are not canned and acidified foods are not manufactured in the plant without the license required by Health-General Article, §21-305, Annotated Code of Maryland; The required food processing license is conspicuously posted in the plant during operations; and The food canned or manufactured is limited to the type or types of foods stated on the license.