Collecting contact details and email address of companies

I have provided you with a list of companies, their websites, industry and in most cases country, I would like to have a relevant contact person and his/her email address, so that I can approach them for a potential collaboration. The priority of which contact to look for goes in the following way: - Chief Product Officer (or somebody else from the same department but with a Senior title) - Chief Technology Officer (or somebody else from the same department but with a Senior title) - Head of Research & Development (or somebody else from the same department but with a Senior title) - if you couldn't find any of the previous ones, please provide us with an info@ or hello@ email of the website. (last resort would be to provide me with any email address possible)