sand lump 中文意思是什麼
sand lump
解釋
砂塊-
Purity silica sand, silica powder, micro - silica powder, crystal powder and fused silica lump and powder, etc. these products are widely used as materials for optical glass, optical fiber,
產品出口日本,韓國,東南亞,歐洲以及美洲市場,主要生產石英系列產品:石英砂硅砂,
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