Duro Bag Manufacturing Co., one of the largest manufacturing companies based in Greater Cincinnati, is being acquired by a South Carolina plastic bag manufacturer and recycler. Hilex Poly Co. LLC, a sustainable packaging company based in Hartsville, S.C., announced on June 17 it has entered an agreement to buy Duro Bag. Terms of the deal were not disclosed. The deal is expected to close at the end of the second quarter, subject to customary closing conditions and regulatory approvals. Charles…