People work at a fitness equipment manufacturer in Ningjin County, east China's Shandong Province, April 2, 2025. Ningjin County is a major commercial fitness equipment manufacturing hub in China, serving global markets in over 170 countries and regions. The county produces more than 1,000 product variants across 400-plus categories including aerobic machines, strength training systems, and rehabilitation apparatus. With 2,509 registered enterprises (20 being large-scale manufacturers), the total output value of the fitness equipment industry in Ningjin reached 13.9 billion yuan (about 1.9 billion U.S. dollars) in 2024. (Xinhua/Zhu Zheng)