... (min.)SiO2(max.)CaO(max.)Fe2O3(max.)Al2O3(max.)L.O.I.mesh95%1.20%1.50%0.50%0.10 ... materials manufacturing, also widely used in rubber, jointing sheet, rubber products, pharmaceutical industry, food industry, plastic accelerator, the glass fiber ... grease, dye, ceramics, desiccant, resin, flame retardant used as xiangsu products stuffing and strengthening agent, Industrial Grade Magnesium Oxide (MgO) 99 ...