Kingeagleā€™s solar vacuum tube adopt dry absorb type selective coating with lower remittance, it solved the problem of normal tube having not good curve of emittance, when the
temperature higher, the remittance higher, which reduce the efficiency of the tube.

1. Higher Efficiency: The absorbance increased by 14% with remittance reduce by 30-40%
2. Higher Heat conduction: dry exposure temperature up to 270Ā°C and can endure -30Ā°C environment temperature and still working
3. Higher Vacuum Degree: Unique technology to keep the vacuum degree, stable absorbance which guarantee the long life of the tube