Okla. Stat. tit. 52, § 52-420.14: Nonresidents - Prohibition on storage or dispensing

The State Liquefied Petroleum Gas Administrator shall not issue

or renew any registration permit or license to any person, firm, or

corporation who is a resident of, or whose principal place of

business is located in, a state other than Oklahoma unless the laws

of such other state, and the rules and regulations of the authority

governing the storage and dispensing of liquefied petroleum gas

permit the operation of such business by citizens, firms, or

corporations of Oklahoma under the same or substantially similar

terms and conditions as those required for such operation in this

state.