During 18 years of trails and hardships, Jinbo has put up 8 wholly-owned white fused alumina production lines, 3 mullite production lines and 2 magnesia alumina spinel production lines.

Available standard MA-spinel bricks differ mainly in the type of magnesia and in the amount and type of their alumina carrier (sintered and fused MA-spinel, calc. alumina, white fused alumina, etc. )

Effects of variety of binder, additions of graphite and special grade high-alumina bauxite chamotte on high temperature properties of magnesia-alumina-carbon (MAC) products were studied.