Our company's production of active α - A1,0 micro powder is completely organized according to the standards of well-known foreign alumina micro powder production enterprises. The product has been selected by large refractory material enterprises and research institutes in China to produce key products such as ladle castables, iron groove castables, permeable bricks, seat bricks, corundum self flowing castables, spray coatings, etc. The usage effect is comparable to imported products. And export to famous refractory material production enterprises in Japan, the United States, and Europe. Our company produces active α - A1.0 micro powder with low impurity content, fine particle size, reasonable particle size distribution, and controllable activity. It is used in castables with good flowability, low swelling, long working time, high medium temperature strength, dense structure, and good performance. It is also used in high-performance refractory materials