Aluminum curve tube 1.high quality&competitive price 2.various surface ... , surface-grinding, mouth-broadening, mouth-shrinking, bending,sharpening,and shaping etc. Advantage:A. Top quality ,best price,delivery in time ... over 50 workers. C. Equipments: CNC machines, bending machine, Automatic spark machine, line cutting machine, shearing machine,etc. D. Surface treatment: Anodizing, powder coating ...