The National Tooling and Machining Association (NTMA) is the largest trade association in the United States serving the custom metalworking industry. Over 1,700 member companies design and manufacture the parts, tools, dies and molds that go into the creation of every manufactured product in the world and serve vital industries such as defense, aerospace, automotive, electronics, and many more. For more information about the NTMA, please see our website at www.ntma.org .