Hook and fissure sealing assembly
The utility model provides a pit and fissure sealing assembly, which comprises a thin film, a sealing layer, a sealing layer and a sealing layer, and is characterized in that the thin film is attached to a pit and fissure sealing agent; and the gasket is used for filling the gap between the upper te...
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Format: | Patent |
Sprache: | chi ; eng |
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