when the original is made in China the manufacturer might make more than the company ordered and sell the surplus via AliExpress. They may be the exact same tool as the SOG with the same markings, but not authorized by SOG, or they may be seconds that were refused by SOG, or they may be a clone made on the same assembly line as SOG or they could be an all out copy. Most of AliExpress's stuff is pretty good quality, but is it really a SOG? You buy from AliExpress you take your chances.