S.C. Code § 61-6-2860
A registered producer of alcoholic liquors must, at the time of application for registration in this State, file with the department an affirmation of corporate policy with regard to sales of all brands owned, controlled, sold, offered for sale, franchised, or distributed by the producer in this State. The affirmation must certify that the producer shall not wilfully sell or offer for sale any alcoholic liquors of a particular brand and proof in any other state at a price lower than the price these liquors are sold or offered for sale to licensed South Carolina wholesalers.
"Price", as used in this section, means platform price at the distillery and does not include price differentials based on transportation costs, containers, or other costs not directly related to the quality and proof of the product concerned. Quantity discount prices for liquors sold to monopoly states or elsewhere must not be considered to be violations of the producer's affirmation if these discount prices are also offered to South Carolina wholesalers for purchases in the same quantities.
A registered producer who fails to file this affirmation or wilfully violates the pledges contained in the affirmation must have its registration and privileges to import and sell alcoholic liquors in the State revoked, canceled, or suspended at the discretion of the department for a period as the department considers necessary and proper.
S.C. Code § 61-6-2860