Sorry, not a clue. These days, most things are made in China, yet some are made to special standards, so they are actually quality. I'd ask the supplier if it is quality, and not just Chinese crap.
Not sure how true it is, but I heard that NTN or Timkin bearings are made in China now, but they have been given strict guide lines of the materials that must be used to maintain their reputation of being the best. Not the usual mentality of make them as cheap as possible and the quality doesn't matter.
