The Lingbi Postal Production Complex Building of China Post Group Suzhou Branch is located at No. 308 Jianshe Middle Road, Lingbi County, Suzhou City, Anhui Province. It serves as an office building for local postal management personnel and postal savings management personnel, and also functions as a local information data sub-center, which is an important node in the postal network. This project upgrades and reconstructs the existing office network, adopting WINWANT's Category 6 unshielded solution to meet the requirement of gigabit to the desktop. The original multimode gigabit optical backbone is replaced with single-mode 10-gigabit, greatly increasing the data throughput with local branch business points, reducing system latency, and significantly improving the efficiency of business processing.