For more information, contact:

Jim Donaldson
Advanced Energy Industries, Inc.
Marna Shillman
Advanced Energy Industries, Inc.

Advanced Energy Names Matt Goulais Product Manager of Plasma Source Group

Fort Collins, Colorado (April 27, 2000)-Advanced Energy Industries, Inc. (Nasdaq: AEIS) has named Matt Goulais Product Manager of the Advanced Energy Plasma Source Group located in Fort Collins, Colorado. Mr. Goulais has direct operational and strategic responsibility for the Plasma Source Group's overall performance. In announcing the new appointment, Hollis Caswell, Advanced Energy's President and COO, said, "Matt has great capabilities and the skills necessary to see that the Plasma Source Group capitalizes upon its many strategic strengths."


Before joining Advanced Energy, Mr. Goulais was with Veeco-Ion Tech, Inc. as a Technical Sales Engineer. Prior to that position, he was a Continuous Improvement Engineer at Decoma Kinetics-Bestop.

Advanced Energy is a global leader in the development and marketing of power conversion and control system solutions, process monitoring and control tools, ion-beam sources, process temperature controls, and plasma abatement systems. Customers throughout the world use AE's products where plasma-based thin film technology is a critical function in their manufacturing process. This technology is used in the manufacture of semiconductors, CD-ROMs, DVDs, compact disks, flat panel displays, optical and architectural glass, and disk drives. In addition, AE provides the power conversion and control system solutions of choice to a growing number of general applications in the medical, instrumentation, telecommunications, automotive, food packaging, and tool industries. Founded in 1981, AE is a publicly held company traded on Nasdaq under the symbol AEIS.