Paraformaldehyde is a solid formaldehyde with a high formaldehyde content. It is in the form of solid particles and is easy to store and transport.It can be transformed into formaldehyde vapor at higher temperature, which can easily replace high concentration formaldehyde to participate in various reactions, which is beneficial to chemical synthesis such as chemical industry, pharmaceutical and other industrial fields, especially in the synthesis that requires the use of anhydrous formaldehyde as raw material. ,Wide range of uses.There are mainly the following aspects (1) Pesticides: synthetic acetochlor, butachlor and glyphosate; (2) Coatings: synthetic high-end automotive paints; (3) Resin: synthetic urea-formaldehyde resin, phenol-formaldehyde resin, polyacetal resin, melamine resin, ion-exchange resin, and various adhesives; (4) Papermaking: synthetic paper enhancer; (5) Casting: sand-removing agent, synthetic casting adhesive; (6) Aquaculture: fumigation disinfectant. (7) Organic raw materials: used in the preparation of pentaerythritol, trimethylolpropane, glycerol, acrylic acid, methyl acrylate, methacrylic acid, N-hydroxymethacrylamide, alkylphenol, methyl vinyl ketone and the like. (8) Others: medicine and disinfection.