QuanChai Group Co, a company based in Chuzhou, Anhui province, China, renowned for its internal combustion engines, is undergoing a significant transformation through digitalization and smart manufacturing. This evolution is vital for the 76-year-old company to stay competitive in China's rapidly changing manufacturing environment. By embracing China's industrial internet initiatives, the company has overhauled its production lines and financial systems, resulting in a notable 15% increase in engine sales and a 50% surge in overseas exports in the first quarter of the current year. While the company's core business continues to be diesel and internal combustion engines for various applications, it has diversified into hydrogen fuel cells and clean-energy powertrains in recent years. During the 13th Five-Year Plan, QuanChai underwent a comprehensive digital transformation, revamping its technological, production, management, and service processes with digital systems. This included implementing smart factory pilots, integrating ERP and MES systems, and constructing an industrial internet platform utilizing advanced technologies like 5G, IoT, edge computing, and AI-driven analytics. The company's transformation occurred in two significant stages: initial integration of data systems across design, production, and quality control, followed by the establishment of three key platforms in the current 14th Five-Year Plan. These platforms include a digital workshop brain for real-time equipment control, a quality traceability system from sourcing to after-sales, and a shared financial platform automating internal audits. As a result of these efforts, QuanChai has seen substantial improvements in various areas, such as a 30% reduction in R&D cycle time, a 35% increase in production efficiency, and an 18% enhancement in inventory turnover. The company's industrial internet platform has successfully integrated over 850 suppliers, providing a replicable digital model for China's manufacturing sector. Looking ahead, QuanChai aims to enhance its offerings through industrial large models like DeepSeek and plans to expand its utilization of hydrogen power alongside mass-producing electric drive axles. With engines meeting global certifications and sales extending globally, including in Southeast Asia, Africa, and South America, QuanChai envisions itself as a provider of smart, service-oriented manufacturing solutions. Xu Yuliang, a board member, emphasizes the company's commitment to continuous innovation and growth, stating that while the engines may have a long history, the company's intelligence and capabilities are advancing daily.