High efficiency dome combustion hot blast stove burner: 1) Researched and developed by cmES itself2) Patented by the state3) 6 patents of state have also been granted in the research and development of the refractory materials. 4) Burner of cmES's high efficiency dome combustion B.F; hot blast stove; high strength; high alumina ball and low creep refractory ball applied for medium and miniB.F. hot blast stove) 5) 19-hole and 37-hole checker brick for medium and large B.F. hot blast stove have been utilized in more than 20 iron & steel companies in China. producing area:Beijing, China