S.C. Code Ann. § 36-9-316
(a) A security interest perfected pursuant to the law of the jurisdiction designated in Section 36-9-301(1) or 36-9-305(c) remains perfected until the earliest of:
(c) A possessory security interest in collateral, other than goods covered by a certificate of title and as-extracted collateral consisting of goods, remains continuously perfected if:
(e) A security interest described in subsection (d) becomes unperfected as against a purchaser of the goods for value and is deemed never to have been perfected as against a purchaser of the goods for value if the applicable requirements for perfection under Section 36-9-311(b) or 36-9-313 are not satisfied before the earlier of:
(f) A security interest in deposit accounts, letter-of-credit rights, or investment property which is perfected under the law of the bank's jurisdiction, the issuer's jurisdiction, a nominated person's jurisdiction, the securities intermediary's jurisdiction, or the commodity intermediary's jurisdiction, as applicable, remains perfected until the earlier of: