China's overwhelming share of the U.S. toy market stems from several key advantages. The country has built a vast and efficient manufacturing infrastructure, especially in regions like Guangdong Province, where cities such as Chenghai and Dongguan have become global hubs for toy production. These areas are home to thousands of factories that specialize in various types of toys, including electronic, plastic, plush, and educational products. This concentration of expertise, coupled with low labor costs and reliable supply chains, makes China an attractive location for toy companies like Mattel and Hasbro to produce goods at scale.