CNC machine ball screw SFU DFU series 1.The precision is C3-C7,P0-P5 2.Precision machining 3.Prompt delivery 4.OEM service CNC machine ball screw SFU DFU seriesBall screw series:DVF,SFI,DFI, SFU,DFU,SFT,DFT series etc.Ball screw brabd name:HIWIN,TBI,THK,Chinese brand.Our Feature: 1.Highest quality and most competitive price----we have our own factory,large production,near port.Ensure cheap price ...