United Paper Box Co., based in Holyoke, Massachusetts, is a Made in USA manufacturer specializing in rigid setup boxes, slipcases, and turned-edge packaging. With decades of craftsmanship and modern Emmeci box line technology, the company serves industries ranging from luxury retail and cosmetics to spirits, board games, and industrial products. United Paper Box partners with brands to create custom, high-quality packaging solutions that elevate presentation and reflect American-made quality.