Low polymerization degree of polyformaldehyde instead of ordinary industrial formaldehyde aqueous solution, in the synthesis of pesticides, synthetic resins, coatings and fumigation disinfectants and other a variety of formaldehyde downstream products, can reduce the energy consumption of dehydration, but also greatly reduce the amount of wastewater treatment, which is a benefit to the country and the people of green environmental protection project. Low polymerization degree of polyformaldehyde because of its higher effective composition than industrial formaldehyde, is a solid particle, is conducive to chemical, pharmaceutical and other chemical synthesis and other industrial applications, especially in the need to use anhydrous formaldehyde as a raw material synthesis, widely used. It can also be used as disinfectants, fungicides, fumigants and herbicides, as well as in the manufacture of resins and artificial ivory. 1, used as organic chemical, synthetic resin raw materials, but also used as a drug fumigant 2, polyformaldehyde for high formaldehyde content of solid formaldehyde, solid particles, easy to store and transport. It can become formaldehyde vapor at a higher temperature, which is easy to replace high concentration formaldehyde to participate in various reactions, which is conducive to chemical synthesis and other industrial applications, especially in the synthesis of anhydrous formaldehyde as a raw material, and is widely used. There are mainly the following aspects: (1) pesticides: synthetic acetochlor, butylachlor and glyphosate; (2) Paint: synthetic high-grade automotive paint; (3) Resin: synthetic urea formaldehyde resin, phenolic resin, polyacetal resin, melamine resin, ion exchange resin and various adhesives; (4) Papermaking: synthetic paper reinforcement; (5) Casting: sanding defilm agent, synthetic casting adhesive; (6) Aquaculture: fumigation disinfectant. (7) Organic raw materials: used to prepare pentaerythritol, trimethylol propane, glycerin, acrylic acid, methyl acrylate, methacrylic acid, n-hydroxymethyl acrylamide, alkyl phenol, methyl vinyl ketone, etc. (8) Other: medicine and disinfection. 3. Used as sterilization agent, disinfectant, fumigant. Used in organic synthesis, pharmaceutical industry.