VBR066 is an easy and cheap pick. Fairly good quality based on user reports.

My pick.. Non classic cut but good quality and endurance geo would be the Carbonda CFR1056. Also 32mm tire clearance and you can choose fully or semi-internal routing of cables. There is a comprehensive CFR1056 thread here on Chinertown.

Edit: Or if you must have a classic cut without dropped seat stays. Why not go for the super popular gravel Carbonda CFR696? Good quality, relaxed geo, great tire clearance and mounting points for bags/racks/fenders.

Thanks for the advice, but I want a more or less pure road frame. I have been using a Flixii gravel frame for a few years, the 039, and although it is a good frame and has given me great satisfaction on many trips, I want something a little more aerodynamic and above all more rigid, that is why I am looking for a road endurance . My previous frame will be for gravel mounted with GRX400.
The issue of mounting wide tires doesn't worry me, I always use 25 on the road, because later everything weighs down a little, the years too!!

I would just check this forum and see what others say about the brands you are considering.
If you value warranty/honesty and/or your time you can cross OG-Evkin off your list. So only 2 more to go 

After checking prices, listening to your advice about the brands, and discarding OG-EVKIN due to the warranty and contact problems that some of you have had.
So I have the Velobuild and the TanTan, which only vary in price by about 10 dollars between them.

According to you, which of these two distributors is the best in after-sales service, which one would be more reliable?

Thank you very much again for your answers

I'd stay away from og-evkin if you value any degree of after sales service.

Just because they share dimensions/mold, doesn't mean they're necessarily from the same factory.

So which seller or brand of the three offers you the best guarantee, or gives you the most confidence?

The OG-Evkin's CF-025 all black finish on the frame was pretty well done and also the packaging was thoughtfully done and included a warranty card. I do not expect any good aftersales service from any Chinese brand anyways. It is always a hit or a miss. In my case so far it was a hit. I like the frame.
If the geometry chart is similar for the three brands, then it means they are using the same mold but not sure if they all use the same factory to lay up the carbon sheets, etc.

Yes, the geometries are the same in all three brands.
Now I will look for a good offer, to see which one is the best price.
Thank you for your answers.

That won't be a problem, since I think the frame is the same in all three distributors.
I just needed to know from someone who has it, to know their impressions and perhaps also where to buy it at a better price...