GT-M04 is a patented product developed by our company. It belongs to quaternary ammonium salt type cationic polymer and has excellent flocculation, decolorization and COD removal. And the performance is excellent, the removal speed is extremely fast, the alum is big in the water, the settling speed is quick, the decolorization rate is more than 90%, the COD removal rate is very high, the sludge is small, and is specially used for the decolorization of the coking wastewater.