Best wishes.
Be careful.
Many years ago I was in a similar position, and one company / agency applauded my idea, and wanted me to travel to London to discuss, but, it turned out they wanted me to pay up front for their services.
I smelled a rat and left it.
Can't answer you but be very careful.
FAR too wide a Question ! What sort of products ? You need to patent your ideas ! Contact a 'Patent Agent' for advise ! You will VERY likely find that your 'Ideas' are not patentable or have already been patented!
But rememember that it costs a LOT of money to keep a patent running and fight off anyone who tries to use it without your permission !