When i enable Files centralization around products for Documents, documents that i upload in the chatter are available in Documents.

But often a document is relevant to multiple products and i do not want to duplicate this.

For example i want to attach a quotation from a Vendor to my product so i can keep track of how the vendor purchase price was determined.

But that vendor price list can contain multiple products, so it would be interesting to be able to browse documents and create a link to a certain document from the product page.

Any idea on how to accomplish this ?