Machine shop services, namely, machining parts for the manufacture of components and subassemblies for others; metal casting for the manufacture of components and subassemblies for others; assembly of products for the manufacture of components and subassemblies for others; and welding services for the manufacture of components, and subassemblies for others; machine shop services, namely, machining parts, components and subassemblies for others; custom manufacturing for others of parts, compon...