There are three types of inorganic salt flame retardants, organic flame retardants and organic and inorganic mixed flame retardants. Inorganic flame retardants are the most commonly used type of flame retardants. Their main components are inorganic substances. The main application products are aluminum hydroxide, magnesium hydroxide, monoammonium phosphate, diammonium phosphate, ammonium chloride, and boric acid. . The main components of organic flame retardants are organic substances, and the main products are halogen-based, phosphate esters, halogenated phosphate esters, and the like. Some organic flame retardants are used for durable flame retardant finishing of textile fabrics, such as hexabromide water dispersion, decabromo-antimony trioxide flame retardant system, and have good flame retardant performance. Organic and inorganic mixed flame retardants are improved products of inorganic salt flame retardants. Water-insoluble organic phosphate ester emulsions are mainly used to partially replace inorganic salt flame retardants. Among the three major types of flame retardants, nylon flame retardants have the advantages of non-toxic, harmless, smokeless, and halogen-free, and are widely used in various fields. The total demand accounts for more than half of the total demand for flame retardants, and demand growth Rate has an increasing trend.