I have original Nordost Odin 2 cables. One of the members in my audio group obtained these Chinese cables and he came to my house to compare them. The interconnects, especially the gold, looks very similar to the original (from the outside). They sound wonderful especially for the price and hate to say it but they have the Nordost signature. I would say they give 70-80% of the real Nordost sound.
Unfortunately I think the Chinese use the same interconnect cable design for power cables as well as speaker cables. This makes the Chinese copy power cables sound a bit harsh. The worst is their speaker cable as it is not even close in design (nordost makes ribbon speaker cables). The Chinese Nordost speaker cables are also made with interconnect cable design which clearly causes distortion. I have not tried any other Chinese versions (digital cables).
Of course it is for the individual to decide if it is ethical to support copying and flagrant disregard to patent rights. I understand that the originals are way overpriced. So I don’t think anyone can be totally faulted for going the Chinese route.
Anyway buying is not illegal but selling them as real ones may land someone with criminal consequences. So please be careful.