Aluminum curve tube 1.high quality&competitive price 2.various ... used for Household items, industries.Machining Machining by Fringe-milling, rolling, stamping, mouth-narrowing/broadening, hole/bore-making, surface-grinding, ... 50 workers. C. Equipments: CNC machines, bending machine, Automatic spark machine, line cutting machine, shearing machine,etc. D. Surface treatment: Anodizing, powder coating ...