... coconut shells and husks, coal, woods, cylindrical products, powdered activated carbon, PAM, PAC, anthracite filter media, quartz sands, walnut shell ... , bulk bauxite, corundum, white corundum, black corundum, silicon carbide, spinel and other refractory products. Strong economic strength, advanced ... :Picture of our factory: Process of making activated carbon: Transport Packing: coal-based column ...