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Close Up Of Factory Worker Pouring Gold Dust And Ore Nuggets From Bucket. Precious Metal Ore Production. Making Heap Of Gold Dust In Tray. Gold Dust For Ore Manufacturing. Shiny

视  频 ID：  1100622721
版      权：  U360
视频长度：  0:38
横纵比率：  16:9
所属分类：  科技 工业 
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