Except the markets they supply will also be in China as economy there is already bigger and consumption will very soon be also bigger...
This article says Chinese median age in 2019 is 37.3 and us is 36.5. That's interesting that we are the same. China has the other problem of producing too many men and not enough women, leading to increasing problems of pressure. That problem of not enough women to match the men seems like it will be a worse problem.
http://www.worldometers.info/world-population/china-populati... https://en.wikipedia.org/wiki/Demography_of_the_United_State...