Other observations:
1) Several drone detection, disabling and destruction systems
2) Several custom PCB manufacturers
3) Several app customizers
4) Intel was there with a modular drone concept for the commercial market with smart add-ons, SDK enhancements, and more...
5) the show was clearly tailored to the commercial market - not many hobbyists there, nor were we really catered to.
6) A Chinese company had a large drone with 2 gas engines and fuel tanks powering a generator that was recharging the onboard batteries in-flight. This was part of a Large hexacopter that the manufacturer claimed had a 3+ hour flight time. I thought I snapped a photo of it, but can’t find it,
7) Lots of geomapping, LIDAR, and sensor products for commercial applications.