National Manufacturing Group, formerly known as National Composites, is a multi-plant OEM supplier specializing in custom molded FRP, thermoformed plastics, and full metal cab fabrication and assembly. National Manufacturing Group utilizes multiple FRP molding methods, including open mold, LRTM, RTM, and compression molding. As a vertically integrated, American-based manufacturer, National supports domestic innovation through in-house metal and composite product design (as needed), pattern builds, R&D and prototyping, tool and fixture fabrication, high-volume and diversified molding capabilities, and Class A paint operations. Additionally, National is a full-service assembly organization dedicated to value-added component installation and complete system assembly.
National Manufacturing Group operates over 1,000,000 square feet of production space spanning five states, providing the scale, resources, and infrastructure to support programs of any size. Our facilities function as a unified manufacturing platform, supported by centralized business development, engineering, design, finance, and executive leadership. This structure allows National to support customers from early-stage design, material selection, and prototyping through full-scale production—whether the program requires a single component or production volumes in the tens of thousands.