39-9-304. Provisions exclusive -- certain local authority not limited or abridged. The provisions of this chapter relating to the registration or licensing of a person, firm, or corporation, including the requirement of a bond with the state of Montana named as obligee and the collection of a fee, are exclusive. A political subdivision of the state may not require or issue any registrations, licenses, or bonds for the same or a similar purpose. However, this section does not limit or abridge the authority of a local government to levy and collect a general and nondiscriminatory license fee levied upon all businesses. This section does not limit the authority of a local government with respect to contractors not required to be registered under this chapter.