Dunhua Zhengxing Abrasive Co. Ltd. has been a manufacturer of boron carbide powder since 1987, and now is the larggest producer in China. Dunhua Zhengxing boron carbide is available not only in narrow ranges of grain sizes according to the FEPA standard F4 to F1200( GB,T-2481-1998/ JIS and ANSI, but also the components according to customers specifications. In order to increase our capacity of particle processing” in 2008 Hunchun Zhengxing Abrasive Co.Ltd. was founded. In 2012, in order to satisfy our boron carbide chuck capacity both Dunhua Zhengxing and Hunchun Zhengxing founded Xinjiang Grinding New Material Technology Co.Ltd. Now the output is 5,000 tons per year. brbrOur company owns laboratory> which has physical inspection facilities such as Beckman Coulter Laser Diffraction Particle Size Analyzer, Malvern Master Sizer Engelsmann Jolting Voltmeter and a full set of chemical compound inspection equipments. We guarantee our quality by granularity inspection and chemical analysis during the production process based on the physical and chemical index stated in the contracts and our internal quality standards.,br>brMr. Cui Xian> our president with the whole staff warmly welcomes customers from both at home and abroad to visit our company.