machine shop services, namely, machining parts for others; custom manufacture of parts and components for the aerospace, defense, electronics and communication industries; custom manufacture of parts and components for medical equipment, machinery, agricultural equipment and energy equipment; manufacturing services for others in the field of aerospace, defense, electronics, communications, medical equipment, machinery, agricultural equipment, and energy equipment; manufacture of metal and non-metal parts and components to the order and specification of others; contract manufacturing in the fields of aerospace, defense, electronics, communications, medical equipment, machinery, agricultural equipment and energy equipment; custom manufacturing of metal and non-metal parts and components for others; laser engraving; CNC machining; CNC milling; CNC turning; Swiss CNC machining; screw machining; water jet fabrication; wire EDM machining; metal heat treating; metal plating