Dandong Mingzhu Special Resin Co., Ltd. is located in the picturesque and national sanitary city of Dandong, Liaoning Province. The company covers an area of 67,000 square meters, with a building area of 50,000 square meters, and has 321 employees. Its sales revenue is nearly 200 million yuan, of which the sales revenue from resin catalyst products is 120 million yuan (MTBE, light gasoline etherification, high-temperature resistant resin catalysts). The predecessor of the company was Dandong Chemical Plant No. 3, a member of the China Ion Exchange Resin Industry Central Group and a backbone enterprise of the former Ministry of Chemical Industry for ion exchange resins. In 1989, it was honored as an advanced enterprise in the province. In 1993, it was rated as one of the top 500 largest chemical industrial enterprises in China by the National Bureau of Statistics. The company passed the ISO9002 quality management system certification in 1996 and completed the transition to ISO-9001:2008 quality assurance system certification in 2010. Dandong Mingzhu Special Resin Co., Ltd. is one of the domestic professional manufacturers with the most varieties and best quality of ion exchange resins, producing three major series of styrene, acrylic, and epoxy, including eight categories such as strong acid, strong base, weak acid, weak base, macroporous, gel, adsorption, and deoxygenation, with over one hundred varieties. These products are widely used in various fields, including power, metallurgy, electronics, medicine, food, petrochemicals, and sewage treatment. Among them, the market coverage of the DO05 and DO05-II macroporous strong acid resin catalysts used in the synthesis of MTBE and light gasoline etherification reaches more than 80%. In 1997, they were recognized as national new products by the State Economic and Trade Commission. The proprietary product, catalytic distillation components, holds a 70% market share, providing strong technical support for deep conversion of products. The new generation DNW series of high-temperature resistant strong acid resin catalysts can be used as catalysts in organic synthesis processes such as alkylation, hydration, and esterification, leading domestically with their ability to withstand temperatures up to 180°C. Over the past four decades since its establishment, Mingzhu Company, adhering to the corporate philosophy of "people-oriented, scientific and technological innovation," has been dedicated to the development and research of ion exchange resins and resin catalyst products. Meanwhile, through continuous technological innovation and increased efforts in brand operation, the company strives to build itself into a powerful, well-regulated, high-quality, and robust ion exchange resin enterprise. We will join hands with our new and old customers, growing together with higher technological content, superior products, and more comprehensive services, and warmly welcome friends from all over the world to visit us for mutual development.