Ki sa ki se yon kab pre-branch?

Li se fè pre-branch sou modèl yo kab souvan itilize, tankou VV, YJV kwa-liye câbles, câbles ignifuje, sere lè, pousyè tè ak enpèmeyab nan jwenti branch, elatriye, pou fè pou evite. echèk kab ki te koze pa jwenti kab.

Pwopriyete prensipal câbles branch prefabrike:

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