I did an MBO for a firm making capacitors in north Wales in 1985. I sort of felt a bit betrayed when they offshored to China a couple of years later. All those jobs gone. But, they were just ahead of the game. They even make Corona beer in China for the Aussie market now.
That’s the main issue, not tariffs. Labour costs. If both sides levelled the playing field with no tariffs, no artificial barriers to entry, no customs shenanigans, China would still win hands down because of wages. Trump would have to insist that all people manufacturing stuff exported to America were paid US wage rates. China would just tell Trump to lower US wages.