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WFA-HCC is ceramic coated with ferric oxide on the surface by a specific processing. It is made from high quality white fused alumina calcined at high temperature through intensive deep processing. The product features a large specific surface area,

After calcinations at 1050℃,with the anneal treatment, and subsequent processing ,the organic matters inherent in the grains will vaporize and the grains more higher purity, cleanliness, better hydrophilicity,

Brown fused alumina shows blue after calcination at 1350℃ temperature. The impurities existed in the grains will be separated out & vaporized . The surface of each particle changes coarser, improves the hydrophilicity greatly.