Lead fine powder fine density propaganda device
The utility model discloses a fine density propaganda device for lead fine powder. The fine density propaganda device comprises a lifting adjusting auxiliary mechanism, a lead fine powder sample sliding display mechanism, a propaganda board, a main supporting board, a supporting stand column, a mova...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
30.11.2021
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Subjects | |
Online Access | Get full text |
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