The provisions of Article 5 (commencing with Section 10230) and Article 7 (commencing with Section 10240) do not apply to any person whose business is that of acting as an authorized representative, agent, or loan correspondent of any person or employee thereof doing business under any law of this state, any other state, or the United States relating to banks, trust companies, savings and loan associations, industrial loan companies, pension trusts, credit unions, or insurance companies or when making loans qualified for sale to any of the foregoing insofar as that business is concerned.