Mutual and assessment companies, unless otherwise specified in this title (except article 15), and article 14 of title 24, C.R.S., are required to pay the same fees and be under the same supervision and authority of the commissioner as companies that are engaged in the same kind of insurance business and that are organized upon the joint-stock plan, and they shall comply with the general laws of this title, unless otherwise specified, and be subject to the penalties provided therein.