<正>Recently,the Bureau of Geology and Mineral Exploration and Development of Guizhou Province detected an about 140 million tons resource in Zheng'an Count
<正>Requested by Ministry of Commerce of China and SASAC (State-owned Assets Supervision and Administration Commission of the State Council), the credit evaluat
Carbothermal reduction and nitridation(CRN)of zircon(ZrSiO4)permits obtaining different composites of oxides and nitrides such as ZrO2-Si2N2O and ZrN-Si3N4.The