Liaoning Dingjide Petrochemical Co., Ltd. (Stock abbreviation: Dingjide, Stock code: 603255.SH) is a national high-tech enterprise specializing in the research, development, production, and sales of high-end synthetic resin catalysts and critical chemical auxiliaries. Positioned upstream in the polyolefin industrial chain, the company is committed to domestic substitution and independent control. Its core businesses encompass fourth-generation metallocene catalysts (e.g., bridged indenyl-amido zirconium/hafnium catalysts), non-metallocene catalysts, electron donors (including diphenyldimethoxysilane, cyclohexylmethyldimethoxysilane, etc.), antioxidants, and nucleating agents. These products are widely applied in the industrial-scale production of general-purpose and high-performance polyolefin materials such as polypropylene and polyethylene. Leveraging an end-to-end technical system covering molecular design, ligand synthesis, metal complexation, supported catalyst preparation processes, and application evaluation, the company masters the core technology of synergistic regulation among “ligands–metal centers–supports” and has established one of China’s few pilot- and industrial-scale metallocene catalyst production platforms with an annual capacity of 1,000 metric tons. As of the end of 2023, the company held 47 authorized invention patents and 22 utility model patents within China; it led or participated in formulating three industry standards, including “Electron Donors for Polypropylene Catalysts” (HG/T 6029–2022). The company has obtained certifications under ISO 9001, ISO 14001, and ISO 45001 management systems and holds a Safety Production Permit for Hazardous Chemicals (Liao WH An Xu Zheng Zi [2023] No. 070007). Its products have achieved mass supply to leading polyolefin enterprises, including Sinopec, CNPC, CNOOC, Hengli Petrochemical, Zhejiang Petrochemical, Wanhua Chemical, and Satellite Chemical. Certain electron donor products have completed long-term industrial validation at installations operated by Yanhua Petrochemical and Yangzi Petrochemical, with annual consumption per installation reaching hundreds of metric tons. Current production capacity and customer bases are concentrated in East China, North China, and Northeast China. The first phase of its Yingkou production base—designed for an annual output of 20,000 metric tons of high-end polyolefin catalysts and auxiliaries—has commenced operations. Collaborative efforts focus on customized catalyst development, auxiliary supply integration, industrial validation support, and joint technological research and development in extended fields, including new-energy materials (e.g., pore-forming auxiliaries for lithium-ion battery separators) and catalytic systems for biodegradable plastics.