Hunter Douglas
http://www.hunterdouglascontract.com
TechStyle

USG
http://www.usgdesignstudio.com
Acoustical, Mineral Fiber, Mineral Wool, Fiberglass, Scrim covered, Logix Linear & Basic.

Shanko Ceilings
http://www.shanko.com
Tin & Copper

Tectum Inc.
http://www.tectum.com
Cementitious Wood Fiber.