I've always refiltered finished Chinese oils....Even UGL's when I used to use them, I'd refilter before use.This has been addressed and battered for countless times now. Most of us here advised on not purchasing used oils get raws instead. If you don’t have the time or aptitude to brew yourself then buy from someone else.
If the vendor doesn’t improve their service then that’s their loss if costumers aren’t buying their finished oils. However, you guys are still buying their crappy products even if it has issues and kept complaining about it, as a harm reduction forum, we can only warn and chastise the vendor, after that its up to the consumers to dictate the flow with their purchasing power.
In conclusion, you keep tolerating subpar quality then the vendor will not put effort to improve their quality.
When someone is banging out 1000's of vials at a time, I just see it as common sense that at best they would be classed as semi-finished oils.