Does anyone recognise this frame?  I don't think I have seen it before  and the seller is new with no feedback. Looks interesting although possibly a little bit short on reach for today's "standards.

https://www.aliexpress.com/item/Free-Shipping-2019-27-5er-29er-All-Mountain-Enduro-CARBON-Full-Suspension-Frame-bike-148-12mm/33016566232.html?spm=2114.search0104.3.1.5c675bf6WzzmqA&ws_ab_test=searchweb0_0,searchweb201602_2_10065_10130_10068_10547_319_317_10548_10696_453_10084_454_10083_10618_10307_537_536_10131_10132_10133_10059_10884_10887_321_322_10103,searchweb201603_52,ppcSwitch_0&algo_expid=83280f6e-a2a8-4520-910d-b464eb949bfb-0&algo_pvid=83280f6e-a2a8-4520-910d-b464eb949bfb&transAbTest=ae803_3

I'm impressed with their photos and measurements - maybe the most informed seller yet. It has the usual wonkiness of a chiner frame - enduro xc bike with 110mm of travel and a fd, very quaint. But the geo numbers are a turn off, I'd like 630mm ett in a 19". With the slack seat angle and short reach, you're going to put a setback post which will slacken it even further. Maybe good for flat terrain but steep ups are going to be awkward with your butt over the rear axle!

Couldn't agree more, way to short.

I also did manage to find the frame elsewhere being sold as Winowports.

https://www.aliexpress.com/item/33002875210.html?spm=2114.search0104.3.120.3b03486bT35hQ6&ws_ab_test=searchweb0_0%2Csearchweb201602_2_10065_10130_10068_10547_319_317_10548_10696_453_10084_454_10083_10618_10307_537_536_10131_10132_10133_10059_10884_10887_321_322_10103%2Csearchweb201603_52%2CppcSwitch_0&algo_expid=c76f6004-41d6-4c63-bcd4-bfefe57f021c-17&algo_pvid=c76f6004-41d6-4c63-bcd4-bfefe57f021c&transAbTest=ae803_3

I'll be passing on this, the search continues.

So, what travel, geo, and linkage type are you looking for?

Rip 9 RDO 27.5  about nails it for me although I would like to be able to go to a 2.8 tyre. DW link would be ideal but  I am not that fussed on linkage type as long as it works and provides suspension without constant pedal bob.

https://ninerbikes.com/products/rip-9-rdo-27-5