1)Solar Energy Project
2)solar system for hotel,resturant
3)vacuum tube:58*1800mm
4)solar system:water tank, controller,tubes

Features:
1) Higher heat efficiency:Advanced heat transferring style of the heat pipe.
Heat transfer speed above the 10, 000 multiple of copper
2) Working without water inner tubes
3) Made of New tr-element vacuum tube
4) Could be used when the temperature is -40C