Maleic anhydride is mainly used as raw material unsaturated polyester resin (UPR) in FRP industry; 1,4-butanediol (BDO), tetrahydrofuran (THF) and γ- Butyrolactone (GBL); It is also used in coatings, lubricating oil additives, pesticides, tartaric acid, succinic acid and anhydride, tetrahydrophthalic anhydride, modified rosin, etc.

加氢类产品：顺酐在加氢类产品（包括BDO、THF和GBL等）中的应用，特别是在新型热塑性工程塑料聚对苯二甲酸丁二醇酯（PBT）和作为氨纶原料的聚四亚甲基醚二醇（PTMEG）中的应用，是过去10年间乃今后较长一段时间内，能够大幅拉动全世界顺酐产品迅速增长的主要因素。

Hydrogenation products: the application of maleic anhydride in hydrogenation products (including BDO, THF, GBL, etc.), especially in new thermoplastic engineering plastics polybutylene terephthalate (PBT) and polytetramethylene ether glycol (PTMEG) as raw material of spandex, is in the past 10 years and even for a long time in the future, It is the main factor that can greatly drive the rapid growth of maleic anhydride products all over the world.

不饱和聚酯树脂（UPR）：是热固型树脂的主要品种之一，由于其优良的机械性能、电性能和耐化学腐蚀性能，且加工工艺简便，因此应用广泛。目前可以经营400余个牌号的UPR，主要品种包括邻苯型、间苯型、对苯型、双酚A型等，按用途和功能分类包括通用树脂、耐化学品树脂、阻燃树脂、浇注树脂、柔性树脂、人造大理石、BMC与DMC树脂、装饰类树脂和特种树脂等。

Unsaturated polyester resin (UPR): it is one of the main varieties of thermosetting resin. It is widely used because of its excellent mechanical properties, electrical properties, chemical corrosion resistance and simple processing technology. At present, more than 400 brands of UPR can be operated in China. The main varieties include o-benzene type, m-benzene type, p-benzene type and bisphenol a type. According to the purpose and function, they include general resin, chemical resistant resin, flame retardant resin, pouring resin, flexible resin, artificial marble, BMC and DMC resin, decorative resin and special resin.

涂料：顺酐在涂料方面的应用主要是醇酸树脂涂料和氨基树脂涂料。醇酸树脂涂料是18大类涂料中消费量的一类，产量和消费量约占涂料总量的三分之一。醇酸树脂具有良好的附着力、光泽度和抗腐蚀等性能，广泛用于建筑涂装、机械和汽车涂装、家俱以及防腐涂装；氨基树脂涂料也有良好的硬度、光泽和保光保色性能，广泛用于轻工家电产品的装饰涂装。

Coatings: maleic anhydride is mainly used in alkyd resin coatings and amino resin coatings. Alkyd resin coating is the largest consumption among the 18 categories of coatings, and its output and consumption account for about one third of the total amount of coatings. Alkyd resin has good adhesion, gloss and corrosion resistance. It is widely used in architectural coating, mechanical and automotive coating, furniture and anti-corrosion coating; Amino resin coatings also have good hardness, gloss and color retention properties. They are widely used in decorative coating of light industrial household appliances.