I dont have any first hand but ive seen a few people do a review and said they were fine. But thats maybe 3-4 buyers compared to probably thousands that have that i havent seen.
Im always skepticle of aliexpress but im pretty sure they have an actual website, google delihea bike frames.
Im 50/50 if they were at this years bike show. I think i remember seeing their logo from chinacyclings vid.
Its a TAD heavy, its inbetween lightweight weight and aero weight. For $500 you can go to velobuild and get a full internal routing, and a somewhat reputable name behind it.