My understanding is that several smaller brands subcontract parts supply to Caterpillar Logistics, now known as Neovia Logistics. I recall reading that Ford use them.
From their reported performance it would seem that the Chinese brands do not.
It used to be that Mercedes Benz would supply parts from Germany for any model regardless of age, however the price went up each year. I recall a Friend with a circa 1967 250SL "Pagoda Roof " broke a grille centrepiece (cast zinc) and was able to get a new one even after 20 plus years but for about $2000 which was a lot in about 1990.
Regards PhilipA

