Hmmmm ... I might suggest a little consideration of the business model.
The first thing that springs to mind is the inherent challenge of keeping a secret on the Ethereum blockchain. It's optimized for transparency - roughly the opposite of confidentiality. In practice, that means that all data stored on the network is knowable by all interested parties at all times.
I'm not suggesting that is insurmountable but it is nontrivial if revealing the information is meant to be linked to a financial transaction.
information about the product
It seems somewhat odd that informative information, like a brochure, would have a cost associated with it. However, it might be worthwhile to research projects that are pursuing digital rights management for insights into innovations. Given the challenge mentioned above, I suspect you will find there are more moving parts than you might initially expect.
Hope it helps.