Silicon carbide is made of quartz sand, petroleum coke (or coal coke), wood chips (the production of green silicon carbide need to add salt) and other raw materials through the high temperature smelting resistance furnace.

The use of black corundum powder can be made into various specifications of polishing wax for fine polishing of various workpieces.

 

Using black corundum granular sand or fine powder, it can be made into fiber wheels for grinding and polishing various workpieces.

 

Use black fused alumina and brown fused alumina to make abrasive cloth, which is converted into abrasive belts, thousand impellers, etc., for polishing various workpieces.