Regulate the acidity and alkalinity of fish gastrointestinal tract, reduce the incidence rate and greatly improve the survival rate. The internal organs are purified, and the black film is removed. The purified fish can remove heavy metals, agricultural residues, and drug residues. The fish meat has no fishy smell, no earthy smell, and the fish smell is full. The meat is fresh, firm, and can not be spoiled after long cooking.

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