This product is a paper-specific flame retardant jointly developed by our company and the State Key Laboratory of Polymer Materials Engineering in Sichuan, focusing on the research of moisture regain phenomenon after the use of general paper flame retardants; Purpose characteristics (halogen-free, environmental-friendly, efficient, flame-retardant) water-soluble paper-specific flame retardant. According to customer's needs, it has good water solubility and excellent flame retardant effect.