Deep Groove Ball ISO9001 Precision:0.010-0.002mm CNC turning, milling, welding, drilling ... , Processing : turning, milling, welding, drilling ,grinding, casting, assembling .2, Precision : 0.010-0.002mm3, Material : steel , copper , brass , plastic ... energy , textile machinery ...... Finework advantages : 1, Competitive price with high production capacity and low labor cost ; 2, Strict quality control ...