N.C. Gen. Stat. § 119-12
It shall be unlawful, and upon conviction punishable as will hereinafter be stated, for any person or persons, firm or firms, partnership or copartnership, corporation or corporations or any of their agents or employees, to aid or assist any other person in violating any of the provisions of this Article by depositing or delivering into any tank, pump, receptacle or other container any liquid fuels, lubricating oils, greases or other like products other than those intended to be stored, therein, as indicated by the name of the manufacturer or distributor, or the trademark, the trade name, name or other distinguishing mark of the product displayed in the container itself, or on the pump or other distributing device used in connection therewith, or shall by any other means aid or assist another in the violation of any of the provisions of this Article.
N.C. Gen. Stat. § 119-12