It's more chinese now than it ever was American, but it's certainly not an absolute thing. Thanks to the global supply chain, it's a big complicated spectrum compounded by a bunch of "it depends". If you don't want to dwell in that pedantry, don't blame you (though I am easily nerd-sniped by discussions of logistics), but without that, that essentially leaves us with "Who owns it" and "Where is it Headquartered." There's also "what are the demographics of their employees" to see if there's a strong representation of a single country ID, but that information isn't always readily available.
I dont know how much employee nationality matters (if it did some of the big tech companies could be thought of as Indian ;-), even though they're American owned).
To me a 'chinese company' is headquartered in china, has predominantly chinese employees, and the amount of its operations in china must be larger than any other single country it does business in.
The ownership of Volvo and Jaguar by Ford is interesting because it effected them differently - with Jaguar it arguably resulted in a significant improvement in quality and reduction of vehicle complexity, Volvo seemed to be less effected by its Ford period than Jag however.
