1) The pipe is made of red copper and conducted by heat transfer medium liquid,water can’t flow into the vacuum tubes and it is operate when confined.
2) Heating insulation is equiped with standard electric water heating setting, automatic temperature controller system.
3) The insulating layer uses polyurethane bulk bubble and can preservation heat efficience.
4) Absorption more heat, provide more hot water, Use AL-N/AL coating the layer can resist more than 400℃ high temperature，and it also can hot water under -30℃ condition. Lifetime is more longer than other materials.