Small in Size, Large in Presence.

Koto's hermetic seals have been highly acclaimed by a number of global companies. Our products have been used for various consumer and industrial components including automotive parts and the devices for aerospace industry which require high levels of quality and technology. Our strength lies in our capabilities to seal various metals with glass at the request of customers, highly reliable plating and our downsizing technology. We are willing to work with our customers with accumulated experience in manufacturing hermetically-sealed packages for quartz oscillators, as well as to provide optical bonding services where we utilize our proven technology to produce indicator lamps and optical filters for cockpit and medical use.