Hey Guys

I am looking to buy a 29" hardtail frame from AliExpress. I'm just looking for a bike to do some distance on, classic XC race build.

My question is that is there any difference between the brands that seem to be selling the same frame? This frame appears to be identical across all four brands, are they just all coming from the same factory or is there any structural difference?

Or can anyone else recommend a tried and tested frame to use as a base.

SP Cycle
https://a.aliexpress.com/_EwZEyj0

SERAPH
https://a.aliexpress.com/_EuWbHh0

YKYN
https://a.aliexpress.com/_EHFzS6A

Airwolf
https://a.aliexpress.com/_EIGeAP0

yes all frames seem same 30.9 seat, left side internal route, 73mm BSA,

RCE...Did you ever build up a carbon AliX 29 HT yet ?