Why my website can not be added into Dmoz's category?

My website is <URL Removed>.
It is one of largest database of China and rest area suppliers, manufacturers and buyers. We providing an active platform for buyers and sellers.
Can anyone kindly tell me the reason?
I submit at http://www.dmoz.org/Business/International_Business_and_Trade/Import_and_Export/Portals/
last year. No reply yet.

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If you're concerned about promoting a particular site, there are very very many people who will offer to help you with that. We focus on something completely different here.