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- LICENSED test567 hongchen MG 1654
Huayang glass-metall-joint tube with integrated heatpipe. - Broken heat pipe by freezing.
Broken heat pipe for solar tubes by freezing (-35ºC ). - Different Kind of Solar Vacuum Tubes
All Glass Heat Pipe Vacuum Tube - Different Kind of Solar Vacuum Tubes
Solar Vaccum Tube with two differnt water channels. - Different Kind of Solar Vacuum Tubes
Air Heater Solar Vacuum Tube - Different Kind of Solar Vacuum Tubes