I have come across these several times. always assumed they were Welgo (or rebranded as another Taiwanese brand). So nothing special or exotic, decent rider quality. Can't remember if the tiny plastic dustcap was any hindrance to re-building and repacking them.

My "best practice" is to always replace used pedals with new balls if the cones & races are good, then fresh grease and adjust them (as many tries as that takes!)