This is a ballast racking system for flat concrete roof. The rail-less solution makes the installation work very easy and quick. If you are interested, please contact Jane at jane@cy-solar.com or skype: jane.solar.mounting.system.
This is so bad. Been doing PV systems for 2 years now and i never saw something so non robust acting as mounting system. Cheep thin material and clueless team of people who have been practicing this presentation. Do not buy this stuff for he love of your own safety.