1.high intensity 2.widely used 3.different grades 4, high ... industries. In the building materials industry can be sub-board tire making, particle board, insulation pillars, railings, artificial marble, asbestos, ordinary tile, wallboard ... ≤0.501.002.003.003.004.004.005.005.00CaO≤1.001.502.002.002.002.002.503.003.50Fe2O3≤0 ...