The maximum distance that on board courier services in China can transport items depends on various factors such as transportation modes, time constraints, and local regulations. However, in general, on board courier services in China can transport items to domestic destinations nationwide. The range typically covers distances from one end of China to the other, including major cities like Beijing, Shanghai, Guangzhou, and Chengdu. These services ensure efficient transport of urgent items, with delivery times usually ranging from a few hours to a couple of days, depending on the specific requirements.