Tosoh

Who we are. We are Tosoh Quartz, Inc. (TQI), the world's leading manufacturer of quartz glassware for the semiconductor industry. With locations in Portland, OR and Durham, UK, we have been dedicated to uncompromising quality and service since our founding…

Tosoh Quartz is a global leader in high precision silica glass products, where innovation and quality drive our success in the semiconductor, optical, and display industries. As part of the diversified Tosoh Corporation family, our teams in the US and…