(a) Within this state, no person, firm, partnership, or corporation shall engage in the processing of pecans other than those grown by him or it or in selling pecans other than those grown by him or it at wholesale without first obtaining a license to do so from the Department of Agriculture.

(b) Applications for licenses shall be on a form prescribed by the Commissioner.

(c) Duly issued licenses shall be on a form prescribed by the Commissioner. They shall remain in force unless revoked but shall not be transferable.