The scrap must be carefully selected to contain exactly the right ingredient before it is sent into the electric to be furnaced.
熔炼前必须先经过仔细挑选，以保证其成分完全符合要求。
Urine-wetness scrap was selected as core of aluminum-plastic panel replacing LLDPE.
用尿不湿边角料代替线型低密度聚乙烯（ LLDPE）作为铝塑板的芯层。
Urine-wetness scrap was selected as core of aluminum-plastic panel replacing LLDPE.
用尿不湿边角料代替线型低密度聚乙烯（ LLDPE）作为铝塑板的芯层。
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