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內側打開小型拖鏈滿足電線電纜兩端接頭大于電線電纜直徑的穿線要求，輕便低噪音、速度快，廣泛應用于工業設備自動化、醫療、自動門機系統等領域。
Inside bar can pen cable chain, it can meet the requirements of threading cable with both end connectors larger than the diameter of cable. It is light, low noise and fast. It is widely used in industrial equipment automation, medical treatment, automatic door machine system and other fields.