What type of companies or industries service interior designers & the interior design industry?

For example: Custom Interior Fabricators, textile fabricators..

These links may help you get an idea. As a designer, I would not think to look up either of your examples. A fabric showroom would use textile fabricators or textile mills. Most often we rely on referrals for service professionals.

http://www.designeresources.com/
http://www.interiordesign.net/article/CA374961.html

Armand’s Draperies & Shutters Lafayette, CA Interior Design

Garfield The Cat And Friend Collectible Teapot For Kitchen Decor And Teas $20.95 A spot of tea with this delightful fat cat is just what the doctor ordered…

2 Green Kundan Lakh Hand Made Earring Bellydance India $9.00 An antique looking kundan earring beautified with fine enamel & well encrusted with white beads that enhances the overall beauty….

Floating Fish $100.00 Flensted Floating Fish MobileEach fish is cut from solid pine.Hangs 16″ tall by 16″ wide.Each fish varies in size, up to 11″wide.Ships within 1-2 days via USPS Priority from Oregon.Comes fully assembled.Made in Denmark….

BMV Quantum Subliminal CD Interior Decorator Success (Ultrasonic Career Development Series) $14.99 Program your subconscious mind to be a successful interior decorator. Develop your professional skills to increase your productivity, enhance self-promotion, expand your clientele, improve performance and increase your success. Program yourself to rise to the top of your industry! Create life-changing results using advanced subliminal and brainwave entrainment technologies. Tune your brainwaves to…

Discovery Channel: Interior Motives – Dynamic Designers (VHS) $14.95 Interior Motives – Dynamic designers. Focuses on interior design. From the Discovery Channel….