Refers to the approximate width of a cable tray used for specifying. Picking out a specific width will demonstrate cable trays with that width, in addition to cable tray extras appropriate with that width.B??c 4 – Phun s?n: K? ti?p là b??c quan tr?ng nh?t c?a quy trình s?n t?nh ?i?n. Do ??c tính c?a s?n t?nh ?i?n là d?ng s?n b?t nên ?? bám