Corner-unbreakable connecting piece for air pipe and air pipe comprising same
The utility model discloses a corner-unbroken connecting piece for an air duct and the air duct comprising the same, comprising a first connecting edge and a second connecting edge which are used for connecting air duct plates and are connected to form a break angle; the first connecting edge and th...
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Format: | Patent |
Sprache: | chi ; eng |
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