A savings and loan association doing business in a state adjoining this state, in a city or incorporated town which borders on a city or incorporated town in this state and which is divided by a state line other than a navigable stream, may conduct its business in this state if it satisfies all the conditions for the conduct of its business in the adjoining state involved, without further qualification under this chapter. However, in the conduct of its business in this state, it shall be subject to the provisions of this chapter.