I think the only way to tell would be to tighten the pivot till it stops and see if you can open the knife. Chinese will never duplicate the pivot bushing, ever. It would take too much time to make one in mass quantity.
P.S. wouldnt it be a shame if the factory that made these had an unfortunate fire that started for no reason whatsoever that i didnt start?
P.S. wouldnt it be a shame if the factory that made these had an unfortunate fire that started for no reason whatsoever that i didnt start?