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.

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)