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                    常见问题
                    铜包钢接地棒的技术优势: 铜包钢接地棒制造工艺是采用水平连铸,电气性能极佳,表层紫铜材料优良的导电特性,使其自身电阻值远远低于常规材料。防腐蚀性优越独特,由于铜钢结...
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