Back in December 2016 I asked the question who are HYJLwings? That has now been answered as I have made contact with their founder. They are a semi-independent brand run by a Chinese student, studying in Canada, that has utilised a mixture of Panda Models', JC-wings' and its own moulds on 13 1/400s and 3 announced 1/200s so far. I also mentioned back in December that an A321 was in the works and it now looks like it is imminent in both current and new engine option variants.
The models are available to pre-order at HYJLwings official taobao shop.