Date:
stranded copper coated steel conductor is used on both lightning protection and earthing systems.
铜包钢多股铜绞线用于防雷和接地系统，
Material: copper coated steel 材料：铜覆钢
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Date:
stranded copper coated steel conductor is used on both lightning protection and earthing systems.
铜包钢多股铜绞线用于防雷和接地系统，
Material: copper coated steel 材料：铜覆钢
|
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