Contact us

Build a database with us!

This database will help you to compare or share your data, so your assistance in helping us build this database is greatly appreciated.

Any comment or suggestions.

Your comments and suggestions are important to us. Please let us know what you like about the site, or how we may improve it. Also if you find any error or bugs, please contact us.

Inquiries or comments to H-InvDB. E-mail:yoko.nagai[at]