If you are looking for a tool that will allow collaboration, version control, auditing, reservations on your document. You are going to want to look at higher end tools. Because of your size consumer products will not pass your IT departments standards based on security and the ability to protect your data, I would look at Igloo Software, Or a SharePoint. SharePoint will cost you a lot to customize to get to that point though.
With 28 countries as well the Tool need to be hosted in order to access, responsive for those who are off site and have a multilingual option in which I know Igloo can help with.