Our company specializes in minerals , and we have mature and stable processing technology to meet customs' requirements of different specifications and qualities, which is mainly basis on  our own factories and mines.       For glass and paint materials, we have calcite , dolomite and silica sand which are  mainly applied for sun-e glass, glass fiber and paints .
1. Calcite(CaCO3 98%min ,Fe2O3 40ppm max; Size 8~100mesh)   2.dolomite(CaO 30%min ,MgO 20%min,Fe2O3 100ppm max, Size:8~100mesh)   3.Silica sand(SiO₂:   99.8%min.Fe₂O₃:   50ppm max.  Size:30~120mesh)