This is an inquiry message about '铜废料 （buy Copper Scrap）' from Hung Kee Steel.
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采购产品废料，金属，钢铁，换热器，铝，铜，计算机黄铜废料，塑料。
Scrap, Metals, Steel, Heat Exchangers, Aluminum, Copper, Computer Scrap Brass, Plastic.
运用络合平衡和沉淀平衡的理论，对酸性氯化铜蚀刻液的蚀刻过程进行研究，提出以铜废料作还原剂，回收蚀刻液中铜。
Based on application of theories of complexing and precipitation equilibriums and study of etching process using acidic copper chloride etching soln. , a new method of recovering Cu in etching soln.
工业废料更有害，因为其中有许多毒性很强的材料，如铜和铅。
Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.
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