KOFERIS refers to Poly Ferric Sulfate, and is a product name produced by JC. It is a polymer, ferric, or ferrous base inorganic flocculant, expressed in the chemical formula: [FeFe2(OH)n(SO4)3-n/2]m. It is capable of creating outstanding cohesion effects and performances during waste water treatment, since it consists of an enormous inorganic molecule, forming a multi-nuclei diversified body, cross-linked with OH.