Can a counterfeit Shimano chain be used on an authentic Shimano drivetrain? I accidentally purchased a fake CNHG901 HG-X11 Chain for my Shimano 2x11 M700 Groupset because my original chain already had 0.75 wear. I was naive and stupid to think that I'd actually get a legitimate chain for the amount of money that I was paying. My question is, since the option of getting a refund is already out, is it actually safe for me to use this chain on my bike or am I better off not using it at all.
Additional info: I found out the chain was not authentic through this video: 
                
             where I found many differences between my chain and the one in the vid. Mine had engravings on both sides and not just one, it came with a quick link but not an instruction manual like in the video, and cost about 50% the price of a legit chain.
(The chain in the YT video is not my chain, the video is an actual unboxing of a legitimate shimano chain, I used the video to compare the chain I got and the chain in the video.)
You can normally use chains from other legitimate vendors, be it SRAM or KMC or something else. You do not need to use Shimano™® chains only.
But no-one can tell you whether your chain is of sufficient quality. Only you can inspect it, measure it and try it. We cannot do that.
I am not even 100% convinced it is actually a fake chain, but I will just take is as a premise I am answering to.