Paraformaldehyde instead of ordinary Industrial formaldehyde solution, in the synthesis of pesticides, synthetic resin, paint and preparation of fumigant and a variety of formaldehyde in downstream products, can reduce the energy consumption and dehydration, greatly reducing the amount of waste water treatment, this country is a green environmental protection project. Oligopolyformaldehyde because of its relatively high effective component is Industrial formaldehyde, solid particles, is conducive to the application of chemical and pharmaceutical chemical synthesis and other industrial fields, especially in the synthesis of material requires the use of anhydrous formaldehyde, widely used. Can also be used as disinfectant, fungicide, fumigation agent and herbicide, as well as the manufacture of resins and artificial ivory, etc.