Quality of manufacturing seems good.
https://youtu.be/TScI-9C1BhwRegarding the fitted in Philips and Cree LED it sounds really serious (and that a Chinese company has to mention it if you see the usual copied rubbish) and it sounds funny at the same time to our ears what BRTLED writes in their FAQ when they mention Osram. (#14):
„We, BRTLED, stick to manufacturing unique & higher premium LED lighting for our clients so that we utilize
real imported Cree led or Philips led instead of Cheap domestic imitated Cree or Osram led.“
I have just seen that it is a Taiwanese company, even if there are factories of those in China and elsewhere.