Quick question.  Are you talking about alot of machines, because when you say mining machine, is that just like 1 or 2 or even 10?   or like 200?

If you are talking 10 or so, just let the seller arrange through a local shipping house.  They usually use DHL or UPS and air freight it.  I get ASIC miners via air cargo all the time.

If you are talking about a full container, or even a partial container, then you need a freight coordinator.  I moved a 40' container with a transformer this way.  I can give you the contact but clarify at which scale you are talking.