Solar Vacuum Tubes
USD $1.9 - $1.93 /Piece
Min.Order:1000 Pieces
Haining Tonghua Import & Export Co., Ltd.
3) Interferential coating: copper, aluminum nitride
4) Higher Absorbance, Lower emittance, dry exposure up to 270°C
5) Higher efficiency, more heating
6) 58-1800 mm
7) Lift time: 15 years
Absorbance coating layout:
1--metal reflecting layer(copper)
2--absorbance layer(SS aluminum nitride metal ceramic)
3--remittance reducer layer(aluminum nitride)