- U pipe solar collector
- 2016-12-29 21:41
- The working principle of U type solar thermal collector: The fluid passes through the U-shaped copper pipe which inserte
- U type pipe solar collector
- 2016-12-29 21:39
- The working principle of U type solar thermal collector: The fluid passes through the U-shaped copper pipe which inserte
- all glass solar vacuum tube
- 2016-12-29 21:04
- 1)all glass hard borosilicate :3.3 2)high efficient selective absorption coating: SS-C/CU AL/N