For example, the construction of a cable installation is unqualified, and it is ...
For example, the construction of a cable installation is unqualified, and it is easy to cause mechanical damage. In civil construction, it is also easy to use underground cables for cable damage. Sometimes if the damage is not serious, it may take months or even years to cause the damage to completely break down the fault, sometimes seriously damaging the short-circuit fault that may directly affect the safe production of the electrical unit.
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