Turntable, card type certificate library, book type certificate library and certificate storage cabinet
The utility model discloses a turntable, card type certificate storeroom, book type certificate storeroom and certificate storage cabinet, the turntable comprises an inner ring, an annular substrate,a plurality of first partition pieces and a plurality of second partition pieces, and the annular sub...
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Format: | Patent |
Sprache: | chi ; eng |
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