S.C. Code Ann. § 29-6-230: Subcontractor's right to payment from party with whom it contracts.

Notwithstanding any other provision of law, performance by a construction subcontractor in accordance with the provisions of its contract entitles the subcontractor to payment from the party with whom it contracts. The payment by the owner to the contractor or the payment by the contractor to another subcontractor or supplier is not, in either case, a condition precedent for payment to the construction subcontractor. Any agreement to the contrary is not enforceable.