S.C. Code Ann. § 16-17-680
(B) It is unlawful for a person to transport or have in his possession on highways of this State, in a vehicle other than a vehicle used in the ordinary course of business for the purpose of transporting copper wire, copper pipe, copper bars, copper sheeting, aluminum, a product that is a mixture of aluminum and copper, or stainless steel beer kegs or containers, an amount of copper wire, copper pipe, copper bars, copper sheeting, aluminum, a product that is a mixture of aluminum and copper, or stainless steel beer kegs or containers of an aggregate weight of more than twenty-five pounds, unless the person has in his possession:
(1) a bill of sale signed by:
(D) A person who violates the provisions of this section is guilty of a:
(E) For purposes of this section, the only identification acceptable is a: