Is the realbitmining.com company legitimate?

[vit05]

They say they have a partnership with Bitmain. How do I know if this is true? Is there any place where I can check which companies Bitmain has partnered with?

Btw, is it possible to buy a mining contract from Bitmain?

Many companies that are a Ponzi scheme say they have contracts with Bitmain. It would be very important to have a place to check if something like this is true.