It's a processing plant.

The sale of wheat, sand, electrical, masonry, cylindrical, quartz, pebbles, asbestos processing; the sale of lime, gravel, heavy crystal, fire-proof coating, iron powder, silican algae, highland soil, plaster, pearl rock, platinum, sand, smoothstone, stone, excretion, beads and calcium; the import and export operations of goods and technologies of self-employed or proxy enterprises (except goods and technologies prohibited or restricted by the State). (Projects subject to approval by law, subject to the approval of the relevant department before operating)***