Sun rain solar vacuum glass tube used to distinguish the authenticity of the Antarctic tube, ask for guidance?
And the thermal efficiency is low, the vacuum tube, the black emperor also shiny, shiny, low reflectivity two weigh weight: the ordinary pipe and pipe Himin's words, you will find at least half a pound of Emperor Ming of the vacuum tube more than other brands of single. Three voices: knock, the sound is very different, good sound tube is very brittle, and sound, common tube sound pollution, no echo. Four strong: Emperor Ming of the pipe diameter ball thirty meters, from the height of a vertical drop of fifty cm if the vacuum tube is not broken.
You see the ordinary vacuum vacuum tube and tube to look Himin is the same, but I suggest you from about four to identify the solar vacuum tube: a look at the color: ordinary vacuum tube is not black, the naked eye can see inside is very bright, it will cause the absorption heat and back reflection
Method of distinguishing true and false:The vacuum tube is the core component of solar energy, like a car engine, a human heart, if the thermal performance of vacuum tube is not up to, not 3 or 5 years, bought solar will become "cold water", is very painful
