Might not be relevant but the same discussion is happening with electronic test equipment.
Seems to work fine, much cheaper than the US or European competition.
But, I bought a Chinese spectrum analyser, very cheap, but no servicing information which I need. It sort of works, but there is an enourmous error in the measurement, can't sort it, scrap really.
If the centre swivel goes on a digger, than how old need it be before the repair cost is more than the value? And as for the electronics, buy something before canbus was used?