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This module allow you create a news with many sub. You can create a post to promotion your product.

You can set each post allow viewer review or not. share a post to facebook google+ ....

Give great support ( support install, custom css for suitable with your custom theme .v.v)

pls see demo to know more.
http://opc21.maydap.vn/index.php?route=information/post
http://opc21.maydap.vn/admin
demo
demo

More my module:
album gallery: http://www.opencart.com/index.php?route=extension/extension/info&extension_id=14830