A big clue about the technology is the dropped hints that it's related to Zigbee: http://en.wikipedia.org/wiki/ZigBee
We only use the same hardware standard as Zigbee. Nothing else.
Are you just making Zigbee hardware API calls - or custom firmware? Are you a part of the Zigbee aliance? How did that effect development?
As for claims of range, I'm impressed. Since 2010 onward my startup has built various configurations of Zigbee networks (some >100sq km) - but only saw a max reliable range of 4km (rooftop of 4th floor, clear line of sight, 1W)...which prompted experiments in moving things down to 433Mhz. Just curious what magic is going on....