Andrew Demko commented on this exact issue. As I recall, he said something along the lines of you order the knives in a particular steel, say Aus8a or SK5, the factories tell you okay and give a great price, then they deliver something totally different that they say is the same or equivalent. He said they do that all the time and if you dont seriously test and monitor you get burned. I have heard that from other sources and industries as well, that you simply cannot trust anything coming out of China unless you test it yourself.
But how do we, as buyers, know where the steel REALLY came from. Aus8a, for example, is Japanese. Sorry, real Aus8a is Japanese, but China will happily sell you their version for less. If you think it is the same you are mistaken. They will build the buildings and bridges that their own families drive on out of duct tape and Styrofoam, just imagine how little they care about the steel in some foreigner's pocketknife. Might look good on the surface, but that's about it. Hell, we are talking about the same folks who shipped poisonous baby formula and dog food and drywall and....
Remember too the problems Cold Steel had sourcing actual quality A2. How many batches did they test and reject before giving up completely? Only some v3ry expensive American A2 even came close to the standard.
This is why I am pretty well finished with GSM. Cold Steel struggled to maintain quality in a world filled with deception, fraud, and garbage. They actually tried. GSM, in my opinion, will almost certainly embrace the trash metals. China SK5 for half the price? Sounds like a bargain, just make sure you label it properly and no one can say a word.
All of the above is just my opinion and concerns.