For a short time, hinder puckery power sealing washer
The utility model relates to a for a short time, hinder puckery power sealing washer, it includes locates two above backing sheets on each lamella of sealing washer by sealing washer that constitutesand branch more than two lamellas. An object of the utility model is to provide a for a short time, h...
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Format: | Patent |
Sprache: | chi ; eng |
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