PRESS RELEASE

FOR IMMEDIATE RELEASE

ENTEGRIS EXPANDS FOOTPRINT OPENING A NEW OFFICE IN WUHAN FASTER RESPONSE AND SERVICE FOR ADVANCED NODE CUSTOMERS

Shanghai, CHINA – May 16, 2018 – Entegris Inc. (Nasdaq: ENTG), a leader in specialty chemicals and advanced materials solutions, announced it has opened its 5th China-based office in Wuhan, Hubei Province. The Wuhan office brings together a team of Entegris experts in sales, customer service, technical support, and product management focused on providing the industry’s best services for customers in the Middle and West China.

Through the new office, Entegris is better positioned to provide faster response times to customer technical and service needs. Additionally, the proximity to one of its local manufacturing partners, Hubei Jingxing, enables Entegris to provide greater flexibility and speed in product design and delivery, tailored to customers’ specific requirements.

“With our latest expansion in Wuhan, we are better positioned to more swiftly meet the technical and commercial needs of our advanced node customers in middle China,” said Dr. Alan Chang, vice president, China Sales. “As complexity in chip design continues to grow, especially in technologies like 3D NAND, it becomes even more important to our customers to have on-demand access to our technical resources. For this reason, Entegris has expanded its locations and enhanced team member skillsets in China to help our customers here tackle their toughest manufacturing challenges.”

About Entegris Entegris is a leader in specialty chemicals and advanced materials solutions for the microelectronics industry and other high-tech industries. Entegris is ISO 9001 certified and has manufacturing, customer service, and/or research facilities in the United States, China, France, Germany, , , , , South Korea, and . Additional information may be found at www.entegris.com.

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Media Contact: Kitty Xu +86 21 80236591 [email protected]

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