Maleic anhydride derivative is an anhydride produced from maleic anhydride. The raw materials mainly include maleic anhydride, butadiene, mixed C4, mixed C5 and other basic chemical products. There are many kinds of maleic anhydride derivatives, including methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl nadic anhydride, methyl tetrahydrophthalic anhydride and so on. They are mainly used to synthesize polyester resin, epoxy resin curing, etc.

下游以电子封装（半导体、LED）、电气绝缘（变压器、互感器）、涂料（PCB油墨、UV涂料）等领域为主，被应用在电子元器件、电气设备、涂料等多种领域，市场需求较高。

The downstream is mainly in the fields of electronic packaging (semiconductors, LEDs), electrical insulation (transformers, transformers), coatings (PCB ink, UV coatings) and so on. It is applied in various fields such as electronic components, electrical equipment, coatings and so on, with high market demand.

更关键的是，今年高层提出内循环这个新名词，明确表示进行内循环和外循环的双轮驱动来稳定国内经济，并且目前逆全球化的事件也越来越多，未来实现完全的自主可控才是内循环的关键所在。（政策支持、发展方向明确）

More importantly, this year, the high-level put forward the new term of internal circulation, which made it clear that the two wheel drive of internal circulation and external circulation will stabilize the domestic economy. At present, there are more and more anti globalization events, and the key to the internal circulation is to realize complete autonomy and control in the future（ National policy support and clear development direction)

我国顺酐酸酐衍生物行业起步较晚，但随着近几年国内化工产业的发展，逐渐打破了国外垄断的局面，产品种类不断增长，当前国内生产工艺较为成熟的产品有四氢苯酐、甲基四氢苯酐等。

China's maleic anhydride derivative industry started late, but with the development of domestic chemical industry in recent years, it has gradually broken the situation of foreign monopoly, and the types of products are growing. At present, the products with mature domestic production technology include tetrahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, etc.