S.C. Code Ann. § 33-44-1005
(b) Except as authorized by subsections (c) and (d), the name, including a fictitious name to be used to transact business in this State, of a foreign limited liability company must be distinguishable upon the records of the Secretary of State from:
(c) A foreign limited liability company may apply to the Secretary of State for authority to use in this State a name that is not distinguishable upon the records of the Secretary of State from a name described in subsection (b). The Secretary of State shall authorize use of the name applied for if:
(d) A foreign limited liability company may use in this State the name, including the fictitious name, of another domestic or foreign entity that is used in this State if the other entity is incorporated, organized, or authorized to transact business in this State and the foreign limited liability company: