Santa Ana, CA – Precision Glass & Optics (PG&O - <a href="http://www.pgo.com">www.pgo.com</a>), global experts in optical manufacturing, precision thin film coatings, and customized optical solutions, offers an extensive variety of in-stock glass substrates, including the robust Schott Supremax 33, a rolled sheet borosilicate glass used for applications that require low thermal expansion, high thermal resistance, and low density (12 % lighter than soda lime glass). Other in-stock ...This story is related to the following:Fused Silica | Fused Quartz