Sonoco-U.S. Mills is a wholly owned subsidiary of Sonoco, which is a manufacturer of industrial and consumer packaging products. Founded in 1899, Sonoco s product line includes caulk tubes and components, plugs, dye springs and tubes, glass covers, labels, paper, wire spools and printing cartridges. Headquartered in Hartsville, S.C., it serves clients in more than 35 countries and employs over 18,600 people. With annual revenue of nearly $4 billion, the company serves the automotive, food, construction, medical, hospitality, pharmaceutical, chemical and textile industries. Sonoco offers molding, engraving, lamination, printing and graphic management services. It provides products under various brands, such as Roca, Sono-Wrap, Ollie, Shatterproof, Twist-n-Pull and Sonotort. Sonoco-U.S. Mills has a location in Menasha, Wis.