You may try Hascompany, a company created for the purpose of Global Trading in Mali and abroad. They distribute and sell exclusively high-end textiles and fabrics
http://www.has-company.com/en/pages/hascompany-textile.html

There is also a directory of fabric manufacturers here:
https://www.fabricsweb1.com/fabric-manufacturers/mali

I also found another shop, but that's more clothing, so probably not what you want (although they might help to find supplier)

Bébé Lina Ouolofobougou
Baby clothing store in Bamako, Mali
Service options: In-store shopping · In-store pick-up
Address: Bamako, Mali
Hours: Closed ⋅ Opens 9:30AM Fri
Phone: +223 75 54 45 06
https://business.facebook.com/bebelinacenter/

Let me know if that what you are looking for.

 

Thanks Just trying to help
Let us know what you found eventually.