S.C. Code Ann. § 58-15-100

The charter of any such corporation shall be recorded in the office of the register of deeds or clerk of the court in each county in which such corporation shall have a business office. In case of street railway and steamboat companies, such charter shall be recorded in the office of the register of deeds or clerk of the court of the county in which their respective termini shall be or in which such street railway may be. The declaration, commission, corporators' return and charter shall be filed or recorded by the Secretary of State and properly indexed in books kept by him for that purpose as required by law with respect to the organization of business corporations.