It is a kind of biological metabolite with strong reducibility. It is mainly used for washing and removing manganese from clothing jeans after being wiped with potassium permanganate, fried snowflakes, and sprayed with monkeys. This product is odorless and can greatly improve the working environment. It has a better de-bleaching effect than pyrolysis and oxalic acid; the clothing has clear flowers and good whiteness, and the manganese ion is removed cleanly.