As the global manufacturing industry accelerates its digital transformation, traditional design models in cement plants hampered by fragmented data, inefficient collaboration, and insufficient standardization have become major bottlenecks constraining production efficiency and management advancement. This paper systematically outlines the implementation path and methodology for underlying digital model design based on the Engineering Base (EB) collaborative design platform. By constructing digital solutions encompassing equipment digital models, equipment graphical models, attribute models, project digital models, and their extended design applications, it achieves structured, standardized, and integrated management of cement plant design data. The   implementation in a Lijiang project demonstrates that this solution significantly improves design efficiency and ensures data consistency. It supports end-to-end data connectivity from quotation and procurement through construction and operations, laying a robust data foundation for the cement plant's digital twin system.