All glass vacuum tube is the key part of the system. It is made of double. layer borosilicate glass that can withstand the high impact of heat cold and hailstone storms,with sandwich high vacuum (Thermos structure). The outwall of the inner tube is coated with selective special absorption coating and uses the technology of magnetic control slashing.

The result of a single tube test - The water inside can reach to boiling point within four hours under a fair sunshine but with an ambient temperature of -- 18^oC. The stagnation temperatures can reach upto 250^oC.

This uses the natural circulation of cold and hot water to heat the water in the storage tank according to the principle of thermosyphon systems.