S.C. Code Ann. § 16-17-685
(A) For purposes of this section:
(B) It is unlawful for a person to transport or have in the person's possession on the highways of this State nonferrous metals of an aggregate weight of more than twenty-five pounds in a vehicle other than a vehicle used in the ordinary course of business for the purpose of transporting nonferrous metals, unless the person:
(1) has in the person's possession a bill of sale signed by:
(D) A person who violates the provisions of this section is guilty of a: