这些电线由一个塑料绝缘层缠了起来。
电线外侧裹着塑料以免有人触电。
该电线选用进口铜材优质塑料，质量安全。
The imports of copper wire selection of quality plastic, quality and safety.
TL - 3塑料拖链采用全封闭型，可防止灰尘及异特物进入损坏电线。
TL-3 all-plastic towline closed to prevent dust and damage different special material into the wire.
TL - 3塑料拖链采用全封闭型，可防止灰尘及异特物进入损坏电线。
TL-3 all-plastic towline closed to prevent dust and damage different special material into the wire.
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