MENLO PARK, CA, May 13, 2002 — Ultra Clean Technology (UCT), a leading supplier of gas and liquid delivery systems for semiconductor process equipment manufacturers and device makers worldwide, today announced that the company received awards from Novellus Systems for outstanding quality and service at the company's 2001 Supplier Appreciation Day.

In a company-wide announcement, Clarence Granger, President and Chief Operating Officer, extended congratulations to all employees. "This is the best recognition Novellus can give us for our efforts and results. It is clear that Novellus regards UCT as their best gas delivery system supplier."

Granger added, "UCT and Novellus have a long history of successful collaboration. We have provided quality products and services to Novellus since 1994, and we look forward to continuing our long and mutually beneficial partnership."