pressurized solar energy products water heater collectors

9.advanced technology:Our company use 3 target magnetron sputtering plating technology,which introduce from Germany and also called interferometer coating technology.

8.diameter of 47mm,58mm,70mm are available and we promise the serviece life of vacuum tube over 15 years.

7.remittance reducer layer(aluminumnitride)

6.absorbance layer(ss aluminumnitride metal ceramic)

5. metal reflecting layer(copper)

4.Vacuum degree