Features:
1) Single target sputtering plating
2) Structure: All glass double-tube coaxial structure
3) Material: High borosilicate glass 3.3
4) Al-N/Al solar selective absorbing coating
5) High heat efficiency copper pipe inside
6) Capabilities:
A) Fast thermal collecting efficiency
B) High heat resistance
C) Super cold resistance
7) Specific absorption: As= 0.90-0.93(AM1.5)
8) Average heat loss coefficient: 0.6-0.7W/moC