4.diameter of 47mm,58mm,70mm are available and we promise the serviece life of vacuum tube over 15 years.
3.remittance reducer layer(aluminumnitride)
2.absorbance layer(ss aluminumnitride metal ceramic)
1. metal reflecting layer(copper)
Special charater:
4. small order is accepted.
3.good quality of service.
2.competiity price and excellent quality
Our company use 3 target magnetron sputtering plating technology,which introduce from Germany and also called interferometer coating technology.
1. Advanced technology
solar energy collector vacuum tube :
collector vacuum tube: Resist the frozen weather Cu-Ss-Al absorb coating The tube has the following advantages: |