VEN INDUSTRIAL LIMITED is a national high-tech enterprise and a technology transfer center. We take technology and quality as the core competitiveness of the enterprise, introduce Japanese design concepts, use German manufacturing management technology, have an independent research and development center, and high-precision testing equipment from Japan and Germany. The ball screw developed and produced reaches the precision of GB/T17587-1998, IS03408-1992 international standard C3-C7. The ball nut adopts a high-precision internal thread grinding center, and the external mounting surface of the nut, the ball groove and the steel ball inlet and outlet are ground at the same time in three processes.