Earlier quoted context omitted.
I don't know why you're being downvoted; China absolutely does all of those things. They are not playing fair in the global market and never have. One can debate whether or not the tariff is the right approach, but let's not pretend that China is a victim.
Not every single Chinese tech firm does these things. It's possible to develop a more nuanced view of China other than "China bad tariff good". Why not investigate which firms committed which crimes and punish those specific firms? It's a smarter approach that helps our justice system and China's. But "smarter" isn't part of this administrations playbook.
You're talking about the entire supply chain, so you would end up punishing firms that are otherwise innocent because unbeknownst to them they bought resisters or capacitors or silicon plates from a bad actor.
A smart approach is just not feasible at this scale.