再生铝工业是一棵长青的摇钱树。
现代铝工业由原生铝工业和再生铝工业组成。
Modren aluminum industry consists of primary aluminum industry and recycling aluminum industry.
废杂铝种类多，对废杂铝的预处理是确保再生铝产品质量的关键。
Because the kinds of scrap aluminum are various, so the pretreatment of the scrap aluminum is the key to insure the quality of the aluminum product.
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