430 Shinonoi Okada, Nagano City, Nagano Prefecture Japan
TEL：+81-26-292-6670 / FAX：+81-26-292-6678
E-mail：eigyo@choyo-co.com
URL：http://www.choyo-co.com

This is Kovar® glass; it is used for photomultipliers (components of gamma cameras), light source lamps for atomic absorption spectrometry, and metal sealing of CRT. If requested, we are able to sinter this Kovar® glass into higher density states (higher than 99.5% density).