Fwiw, i had a really, really bad experience with First-Class Carbon Fiber Store, the store that made that pretty white factor.
Over the years, i've dealt with a lot of chinese sellers. This one is sketchy AF.
I was considering buying an unbranded frame (to then add my Tractor logo on top myself with vinyl) because I was curious to get a product with such a high finish, and to compare it to my LT268 that costs a fraction of the price, so i started asking questions.
I asked a lot of questions to which i already knew the answer to, and nothing made sense. The guy spent a lot of time shitting on the whole industry, with only him being reputable and knowing what he's doing. He pushed back on every technical question i asked with something along the lines of "trust me bro".
Basically all his answers were red flags.
My 5 cents: stay the F away. I wish i could block sellers / shops on AliX in order to never see their products again in my feed & search results. Would be a great feature to have.