Hwawei has been called out for KPI farming on the Linux kernel (i.e. lots of bogus contributions to boost their support numbers): https://lkml.org/lkml/2021/6/18/153

There's some more insight on this Hackernews thread where an ex-Samsung employee defends Hwawei and notes it's not intentionally KPI farming, but rather poor internal performance tools.

I would gladly be proven wrong, but a quick Google search doesn't discuss any concrete contributions Hwawei makes (only Git simple git diff metrics, which fall under the discussions linked above)