How to find out if company exists and other.

[Hans Langsholt]

I have found a US company I want to do business with, I have signed a NAD. The business looks very promising. I live in Norway, europe and do not have the time to meet in person.

What can be done from abroad to check the company registration (LLC or other)?
How to check the 3 funders ID?
What can I ask for without scaring them off?
What else do i need to sageguard to ensure opportunity are for real?