专注电线电缆携手共进 共创辉煌 应用范围广
圆线同心绞架空导线 扩径钢芯铝绞线 扩径空心导线Round wire concentric lay overhead electrical strander conductors Diameter-expanded CorductorsSupported by round Wires Diameter-expanded Cordutors Supported by Flexible metalic pipe