Nitrogen Gas Fridge

I'm sure we all remember the experience of BOC and their Nitrogen gas fridge solution. And doubtless some will remember why the whole project came to a grinding halt too! I've now seen the launch of a system that looks surprisingly similar from an outfit called Eco-fridge. Does anyone know anything about this and in particular how have they changed the system to make it better than the old one?

Don't know about the old one but details are on the EcoFridge website.

http://www.ecofridge.info/performance-comparisons.php

Seems they just fill the tanks with nitrogen and release it into the container, maximum 90 hours between refills.

Wouldn't like to be inside when the safeties fail...