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Custom manufacture of roller assemblies; custom manufacture of drill stems; custom manufacture of railroad flanges; custom manufacture of oil field parts, namely, oil field pipes of metal; technical support services, namely, providing technical advice related to the manufacture of aerospace and defense components in the nature of planes and missiles; technical support services, namely, providing technical advice related to the manufacture of oil and gas well drilling equipment; technical support services, namely, providing technical advice related to the manufacture of railroad components; technical support services, namely, providing technical advice related to the manufacture of food and beverage production machines; technical support services, namely, providing technical advice related to the manufacture of firearm components; custom manufacture of food processing and food treatment machines and apparatus; custom manufacture of general product lines in the field of steel pipe and tubing; manufacture of firearm components to order and/or specification of others; manufacture of oil and gas components in the nature of well drilling equipment to order and/or specification of others; manufacture of aerospace and defense components in the nature of planes and missile parts to order and/or specification of others; manufacture of railroad components to order and/or specification of others; manufacture of food and beverage production machines to order and/or specification of others; manufacturing process consulting; technical consulting related to the manufacturing of oil and gas production equipment, control systems, and machinery