There are countless examples of industrial espionage as well as trademark theft. The Chinese refuse to do anything about it.
Americans finally wised up to this and the Chinese are now scrambling to find a solution, but the CCP has painted themselves into a corner.
Any concession to the US will be seen as an ultimate slap in the face to Chinese pride. The CCP has propped up it's legitimacy by blaming all their problems on "foreign influence". The US and the Japanese being the main two antagonists.
Well, if you tell your people that the US is fucking you, then you give in to them, then that makes you look weak and ineffective.
And it will hurt the CCP's political situation very badly.
Before the trade war, which US goods had tariffs in China and how high were they?
The Chinese, by being labeled a "developing country" in the WTO agreement are allowed to have unequal tariffs on imported goods.
Really, it's not one thing with China, it's a list of problems:
1) Artificially controlled (and low) currency, making Chinese goods cheaper than American goods.
2) Specific tariffs on American goods (cars)
3) Industrial espionage of technology (Huawei)
4) Trademark theft (Apple and other luxury brands have literally fake stores all over China)
5) Intellectual property theft (DVD's, movies, ect..)
6) Geopolitical rivals. They often refuse to cooperate with US led efforts around the world.
7) Domestic Chinese political oppression. China is a police state and getting worse.
I think Americans are finally done with it. Why should we put up with all this? For cheaper cell phones?
What we can get from China, we can get from other countries without all the bullshit.