Pipeline solar heat protection device that expands

The utility model discloses a pipeline solar heat protection device that expands, including first connecting pipe and second connecting pipe, the second connecting pipe is located the right side of first connecting pipe, fixedly connected with bellows between first connecting pipe and the second con...

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Bibliographische Detailangaben
1. Verfasser: MA MINWEI
Format: Patent
Sprache:chi ; eng
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