S.C. Code Ann. § 33-31-401
(c) A corporation may apply to the Secretary of State for authorization to use a name that is not distinguishable upon the Secretary of State's records from one or more of the names described in subsection (b). The Secretary of State shall authorize use of the name applied for if:
(d) A corporation may use the name, including the fictitious name, of another domestic or foreign business or nonprofit corporation that is used in this State if the other corporation is incorporated or authorized to do business in this State and the proposed user corporation has: