With the rapid development of the digital transformation of the steel industry, the digital transformation of Shandong Jiacheng New Metal Materials Co., Ltd. is imminent. The system construction will be started in December 2022 to integrate and reconstruct the original two L3 systems. Considering that the integrated system will be the world’s top cold-rolled production execution system, while taking into account the rapid iteration needs of the future development of cold-rolled steel coil, the cold rolling mill of Shandong Jiacheng New Metal Materials Co., Ltd. combines the technical architecture of the Internet to integrate and optimize the functions, unify business processes, unify operating methods, and deposit reusable business capabilities into the business middle platform, building a “business standardization, function reusability, data sharing” business middle platform architecture.