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 compressed sealing glass for quartz crystal units. It is used for watches, VCR built-in clock circuitry, car radios, and clocks installed in cars.
These materials are mainly used for sealing iron to iron-nickel. For sealing other materials, other kinds of glass with different compositions are also available.