How to identify DVD manufacturers

[Digibop]

Hello All,

Does anyone know how to identify who makes the DVDs for other companies like Verbatim, Imation, Sony, etc?

I have a link that identifies CD-R companie, but not for DVDs.

Here is the link to find CD-R comanies:

www.cdmediaworld.com/hardware/cdrom/cd_factories.shtml

Thanks in advance