B2b Trade Network

I am interested in getting feedback for my startup product b2bsphere.com, targeted towards B2B audience. It is a platform for buyers to search, connect & collaborate with suppliers/service providers. Collaboration is through integrated cloud file storage/sharing on the platform, chat (private, group), open-closed networks for buyers to manage projects individually, chat, audio-video conferencing all in one place along with integration points with common business tools Dropbox, Box.com, Google Drive, Quickbooks, Zoho and more. Welcome any critique on the product scope and vision, any suggestions will be greatly appreciated by the community members.