The Ultrasil Corporation can supply 4 and 5" wafers single side polished,
Double side polished, or etched with a thickness of 4 - 5 mm.  Please contact me
with the balance of your specifications.

Tom Gentemann
VP of Marketing and Sales
Ph # 510-266-3700
Fax# 510-266-3720
e-mail - ultrasiltg@aol.com
www.ultrasil.com