Ball Screw, Lead Screw, Linear Guide manufacturer / supplier in China, offering Factory Direct 6308 6310 6312 6316 6320 Precision Ground Ball Screw High Precision Low Noise CNC Machine Ball Screw, 304 Stainless Steel 3D Printer Screw Positive and Negative Tooth Trapezoid Screw, Custom Size Auto Parts Ball Screw C5 C7 Precision Linear Drive Ball Screw and so on.