Hello,
I have understood your requirement very clearly. In your site there will be two types of users, Manufacturers and Distributors. Both will have to register to get listed in your site. We will also implement search, filter and online chat options. These things, we have done, in many of our websites. Users will be able to post related articles, that's fine. There will be news feed... We have done this functionality in many of our social networking sites... Also there will be a private file sharing functionality available in your site. I would like to get the Detail Requirement Document from you, so that I can provide you my proposal. Please come to chat to discuss in detail. I am ready to get started!
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Regards,
Jyoendrisa,
Marketing Head,
Techno Exponent.