1. it is the mail order or a similar business, merely receiving orders by mail or otherwise in pursuance of letters, circulars, catalogs, or other forms of advertising, or solicitation, accepting the orders outside this state, and filing them with goods shipped into this state; or

2. it employs salesmen, either resident or traveling, to solicit orders in this state, either by display of samples or otherwise, whether or not maintaining sales offices in this state, all orders being subject to approval at the offices of the corporation without this state, and all goods applicable to the orders being shipped in pursuance thereof from without this state to the vendee or to the seller or his agent for delivery to the vendee, and if any samples kept within this state are for display or advertising purposes only, and no sales, repairs, or replacements are made from stock on hand in this state; or

3. it sells, by contract consummated outside this state, and agrees by the contract, to deliver into this state, machinery, plants or equipment, the construction, erection or installation of which within this state requires the supervision of technical engineers or skilled employees performing services not generally available, and as a part of the contract of sale agrees to furnish such services, and such services only, to the vendee at the time of construction, erection or installation; or

4. its business operations within this state are wholly interstate in character; or

5. it is an insurance company doing business in this state; or

6. it creates, as borrower or lender, or acquires, evidences of debt, mortgages or liens on real or personal property; or

7. it secures or collects debts or enforces any rights in property securing the same.

1. subject to service of process and suit in this state pursuant to the provisions of Section 136 of this act² or any other law of this state; or

2. subject to the taxation laws of this state.