I have never heard of the other two, but I know about Qni girls, and I guess I know how you learned about these so-called "brands", and I also estimate that the other two "brands" should be related to Qnigirls. Same nature.

Qni girls is not actually a brand, it is just a very popular website selling girls’ clothing in Korea. Because the more it sells, the more popular it becomes. In Korea, there are many sellers from online stores similar to our domestic Taobao. Using their title, that is, taking the same goods as theirs and using their ready-made pictures, it is easy to sell and saves effort.

And now there are many Chinese in South Korea, or there are channels, Chinese who understand Korean, purchasing from their websites, and then they say that we are the "brand" of "Qnigirls"! ~Use their pictures. In fact, it is not a Korean brand. At best, it has become an "invisible trademark". That is, if you put this "title", many people will want to buy it, because the pictures are very beautiful, not to mention you don't have to take pictures yourself, how great is it? !