Section 18680 does not prohibit:
(a) Any foreign (other state) industrial loan company which does not maintain a California branch office from carrying on the activities described in subdivision (d) of Section 191 of the Corporations Code.
(b) Any foreign (other state) industrial loan company which does not maintain a California branch office from making in this state loans secured by liens on real property located in this state.
(c) Any foreign (other state) industrial loan company from having a California industrial loan company as its agent pursuant to Article 5 (commencing with Section 18700).