Lear.com - company which I believe made the 8th gen seats. It's been too long, but I'm almost positive they were the manufacturer of the seats. I can't even remember exactly, but it seems like someone on 8th needed their info and I found they made them. I don't know if they did the 9th's, but it wouldn't surprise me.
It also looks like they purchased a company called "Guilford's Automotive". It says: Guilford's Automotive Division produces fabrics for a number of automotive interior applications, including seat fabric. Guilford has strong relationships with virtually all of the major global automakers including BMW, Chrysler, Ford, GM, Honda, Nissan, Toyota and Volkswagen.
so Guilford may be the producer of that fabric