... high efficiency solar thermal conversion.Khos solar collector is certified to international standards, we sell in more than 30 ... the key features of the Khos Solar Collector design.1. Internationally certified product2. Reliable, efficient, twin-glass evacuated tubes3. Copper ... pipe solar collector Detailed Pictures SOLAR KEYMARK and SRCC Certified Aluminium Alloy Heat-pipe Solar Collector (KHOS/P6-58 ...