Very few OEM factories make many brands at the same time.
what matters is the contract details .. .. if the goal is a wally world low cost that will be stipulated..

NB, there are 2 Chinas... though the PRC is the only one recognized by agreement with the State Department,
after Nixon went to China..

But there are fleet exercises off the coast of Taiwan by the US Navy regularly ...

supporting the separate governments . that developed after the Chinese Revolution..