(a) No licensed operator or qualified operator shall operate under more than one (1) company name in any one (1) category.
(b) No person shall issue a solicitor's or agent's license to any other person for the purpose of operating under any other name except that of the licensed operator who registers the solicitor or agent with the State Plant Board.
(c) All work shall be performed in the name of the licensed operator or his or her firm. All contracts, statements, bids, and letters shall be in his or her name and on his or her forms, and each agent shall drive vehicles lettered with the name of the licensed operator or his or her firm.