What % of Swiss brand watches use movements that are manufactured in China?

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I asked, and AI says nobody really knows.

Indeed, why would anyone who knows divulge this info?
And yet, I recall seeing quite a few full-throated opinions about this here on WUS.
Makes me wonder How do they know?
Are they Swiss insiders? Maybe they are. 🤷‍♂️

Then, AI went to say this: (Red for emphasis)

There is no exact official percentage for how many Swiss brand watches use movements manufactured…