> How do you start if you have no contacts or expertise in this space?
The only answer other than "you don't" is that you learn, people don't become electronics magnates without spending a career in the industry.
As for Americans, it is even tougher for them, as they have close to no experience in modern manufacturing to mentally to superimpose on things in China.
One can probably become Mark Zukerberg with just really a lot of luck, but nobody becomes Duan Yongping without spending his entire youth on assembly line