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We produce at presentF47, F58, F70 pipe diameters. The lengthes are 1.2m,1.5m,1.6m,1.7m,1.8m,2.0m, and 2.1m, AI--N/AI alternative absorption coating, the whole glass double tubes coaxial structure vacuum solar collecting superconductive hot tubes. Our products enjoy a high reputation both at home and abroad.Features:
1) Structure: all glass coaxial dual tube
2) Material: high borosilicate glass 3.3
3) Interferential coating: copper, aluminum nitride
4) Capabilities:
a) Fast thermal collecting efficiency
b) High heat resistance
c) High cold resistance
5) Life time: 15 years.
