Rock phosphate
Gypsum
Clay
Rock phosphate and sulphur
Gas pressure fryer
Quartz, quartz tube, quartz rod, quartz plate
Muscovite mica flakes
Paper grade calcined kaolin
Fused silica
China clay, ball clay
Minerals
Mica flakes
Crude china clay, ball clay
Silica sand
Quartz sands
Phospo gypsum
Graphite products
Crude mica
Quartz, squartz stone, slabs