China's Yutong Bus Group is a large-scale manufacturing company. Its enterprise scale and sales performance continuously ranks first in the nation’s bus industry, and its bus products are exported to more than a hundred countries and regions. In order to improve the manufacturing process and carry out the transparent production control, the company planned to upgrade the existing manufacturing floor into the advanced and efficient factory. In addition to using MES as the production management system, it was also necessary to adopt panel PCs as the HMI and to establish a network communication in the manufacturing site. On account of stability, the IT department of this company excluded commercial computers and decided to choose the industrial product which has the advantages of high-performance and low failure rates. The factory is a complex and harsh environment, so this project required providing different kinds of panel computers with rugged features for different machine uses, offering wired and wireless network devices to create a complete communication link, and the related modules to acquire peripheral data. Therefore, to ensure this stability, the system integrator used industrial grade wireless devices with wider network coverage and higher power output.