A manufacturer, except an alien manufacturer represented by an importer, shall not engage in business as a manufacturer in this state or employ, appoint, or maintain distributors or wholesalers or dealers, without a license as provided in this chapter . However, new motor vehicle dealers may wholesale motor vehicles without an additional license and used motor vehicle dealers may wholesale used motor vehicles without an additional license. [C66, 71, 73, 75, 77, 79, 81, §322.27 ] 2000 Acts, ch 1154, §24