The Henan Sifangda superhard material Co., Ltd. was founded in 1997, such as polycrystalline diamond composite superhard materials and related products, the company is mainly engaged in R & D, production and sales. Quartet up the nation's largest composite superhard materials R & D and production enterprises, China only one of the few global production line is complete, the products meet international standards of polycrystalline diamond manufacturers, manufacturers of world's top three PCD wire drawing dies, wire drawing dies projects as a demonstration project by the National Development and Reform Commission. 

Professional technology and R & D strength, the company now has a number of invention patents. Quartet is now up to the successful listing on the GEM. Henan Quartet of polymerization diamond workshop Zhang Chin Ho brand sports mixer factory inspections, ordering 3 JHN-15 multi-barrel mixer, and this replacement barrel mixer to greatly shorten the mixing process, but without any increase in the ball pre-mixed, a mixing completed, have a huge impact on the quality of their aggregate diamond grinding wheel.