Hello everybody,
I am looking to buy UD carbon fibre prepreg with a rather low temp cure and around 300g m2 and 45%resin something thin, standard or intermediate modulus. The application is to bond tubes (of Carbon fiber as well). I know (from having seen people working with it) that the product I am looking for look like this:


But looking at the suppliers I saw that there is many Prepregs similar to what I am looking for and one to another when comparing the specs, BUT when looking at the picture (wich seems like the real thing and not a stock picture) it looks like a completely different product....
And I guess it is, only I don't know how looking at the written specs I can find what I am looking for...

Here are a few examples, all of those are carbon fiber UD prepreg of a comparable thickness...

https://www.rockwestcomposites.com/materials-tools/fabrics-pre-pregs-tow/prepregs/14060-d-group
https://www.compositeshop.de/xoshop/lng/en/fibers/carbon-fiber/carbon-prepregs/
https://www.compositeshop.de/xoshop/store-products.php?seo_c=lng%2Fen%2Ffibers%2Fcarbon-fiber%2Fcarbon-prepregs%2Fcarbon-ud-300g%2Fm%2F&seo=epoxy-prepreg
https://www.compositeshop.de/xoshop/store-products.php?seo_c=lng%2Fen%2Ffibers%2Fcarbon-fiber%2Fcarbon-prepregs%2Fcarbon-ud-125g%2Fm%2F&seo=epoxy-prepreg
https://www.compositeshop.de/xoshop/store-products.php?seo_c=lng%2Fen%2Ffibers%2Fcarbon-fiber%2Fcarbon-prepregs%2Fhigh-modulus-carbon-fibers-250g%2Fm-ud%2F&seo=epoxy-prepreg
http://www.fibreglast.com/product/Prepreg_Unidirectional_Carbon_Fabric_43_oz_3114/PrePreg_Fabrics


I am sure this is a stupid question as I am just looking for the name of a type of product but I can't find any clue on this...

Thank you in advance for your answer