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Broken heat pipe by freezing.

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tubes-10.jpg LICENSED test567 hongchen MG 1654ThumbnailsDifferent Kind of Solar Vacuum TubesLICENSED test567 hongchen MG 1654ThumbnailsDifferent Kind of Solar Vacuum TubesLICENSED test567 hongchen MG 1654ThumbnailsDifferent Kind of Solar Vacuum TubesLICENSED test567 hongchen MG 1654ThumbnailsDifferent Kind of Solar Vacuum Tubes

Broken heat pipe for solar tubes by freezing (-35ºC ).