Genuine Audi trimming material suppliers?

[Shane.]

Basically been asked to look into this for a friend, does anyone know a company that supplies genuine Audi materials? Possibly even the place in Germany that supplies Audi themselves. Specifically the vinyl used on the doorcards, the headliner material and the seat leather, have found very close samples but on bigger areas like door cards you can't see the slight colour/grain difference.

Thanks
Shane