With more than 30 years research and development, ZHENGZHOU SIFANG SUPER HARD MATERIALS CO., LTD. (SIFANG) is a leading manufacturer and exporter of Diamond and Cubic Boron Nitride (CBN) tools. Since 1995 we have been serving national and international clients from several industries, for example stone industry, machine tool industry, friction material industry etc. SIFANG was established in 1995 in Zhengzhou City, Henan - China...