Maleic anhydride is an extremely versatile organic chemical raw material and fine chemical product used in the production of products such as fiberglass, artificial stone, coatings, adhesives, etc. It can significantly improve the strength and corrosion resistance of materials. Used for the production of a series of important basic and fine chemicals such as 1,4-butanediol (BDO), gamma butyrolactone (GBL), tetrahydrofuran (THF), maleic acid, fumaric acid, and tetrahydroanhydride. It is also used to manufacture alkyd resins, plasticizers, tartaric acid, etc. Used as an important raw material for coatings, ink additives, and papermaking additives. Used as an intermediate for the synthesis of 6-dihydroxypyridazine, as well as fungicides, fungicides, and other pesticide products. Used for the synthesis of pharmaceutical intermediates. Used as a lubricant additive, paper processing agent, textile finishing agent, food additive, and surfactant in various fields; Also used as a comonomer for maleic anhydride, maleic anhydride, and maleic anhydride styrene copolymers.