Sure, but definitely not to that extent, competitors are certainly not suppressed in the same way, and it's irrelevant to the discussion of why Amazon left China.
Do you mean Bombardier? The aviation company with $16B in revenue and 65k employees? Looks like there was a tariff imposed on one of their models due to a complaint by Boeing but was overturned 4 months later in Jan 2018.
If this is the company you're talking about, can you describe what you mean by "literally was ended"?
Without the Airbus deal for the C-Series Bombardier was basically in bankruptcy exactly because of those tariffs. It felt like quite a targeted attempt to, as you put it, suppress competitors.