Each form is created for a particular expo. When you upload photos or your docs to the form, they are automatically covered with watermarks of this expo. that means, that neither we, nor anybody else can use your docs for any other purposes (for example, to register somebody else to other expos using your docs). This is made, because we care about your personal data safety, and this is what we differ in with our competitors.
Moreover, each expo has its own group of products, that are listed in its form, and you choose your own products of interest from the list, so that you can get maximum benefits from each expo.