It shall not be lawful for any railroad company chartered by this State to discriminate in its rates of freight in favor of or against any railroad company which may connect with it, either at one of its terminal stations, or at any intermediate point on its line. In all cases the charges on freight of the same character, having the same original point of shipment and the same destination, shall be uniform to and from all lines making connections with such railroad at the same point.
S.C. Code § 58-17-2790