Chinese-made humanoid robots are making waves with their ability to do backflips, direct traffic, and even make coffee as the companies developing them seek ways to expand and dominate the market. Robot makers in China say they have thousands of orders from both the government and private businesses for humanoids that can do such things as sort parcels at postal centers, as the country finds ways to cope with an aging population and rising labor costs. However, some experts believe demand for humanoids lags the capacity to build them. China and the United States dominate research for what Morgan Stanley estimates...