S.C. Code Ann. § 33-46-240

The name of each telephone cooperative shall include the words "Telephone" and "Cooperative" and the abbreviation "Inc."; provided, however, such limitations do not apply if, from an affidavit made by the president or vice president of a telephone cooperative and filed with the Secretary of State, it appears that the telephone cooperative desires to transact business in another state and is precluded therefrom by reason of its name.