Zhengzhou Kaipin Precision tools Co. Ltd. is a high-tech enterprise integrating scientific research, production, sales and service. The main products are CBN/PCD cutting tools and turning holders，milling cutters, etc. The company has a strong research and development team, adhering to the concept of independent research and development, has mastered the core technology of nitrogen and boron materials, has advanced production technology and equipment and perfect modern testing methods, and is the...