Vacuum cup

The utility model discloses a vacuum cup, which comprises an outer cup with a heat insulation function, an inner cup with a heat insulation function and an outer cup with a heat insulation function, the inner cup has a heat conduction function, and external threads are arranged on the outer wall fac...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: YAN BOQIN
Format: Patent
Sprache:chi ; eng
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