Den Hartog Industries was founded in 1976 by John and Ann Den Hartog, and is one of the leaders in plastic manufacturing. The second-generation family-owned business is headquartered in Hospers, Iowa, and employs more than 300 individuals. Its more than 275,000-square-foot facility includes corporate offices, manufacturing, mold fabrication, shipping, warehousing, and fleet maintenance. Den Hartog Industries operates various divisions, including Ace Roto-Mold rotational molding, injection molding, blow molding, and Sowjoy metal fabrication. The company s manufacturing services include custom rotational molding, metal fabrication, custom assembly and secondary operations, custom packaging services, flotation and structural foam filling. It also offers engineering services, including product design assistance with 2-D, 3-D and solid modeling capabilities.