| 摘要 |
PROBLEM TO BE SOLVED: To provide a replacement system of an object having a property of being replaced periodically in which replacement timing of the object having a property of being replaced periodically is made clear and it is possible for a third person to know whether or not replacement is performed and a new object is provided.SOLUTION: A washcloth towel 1 on which time information about a replacement time that expires in future is displayed is hung on a towel hanger 3 so as to be visible at a service space such as a toilet. When a responsible person visually inspects the time information displayed on the washcloth towel 1 and determines that the replacement time has lapsed or the replacement time is approaching in relation to the present time, the responsible person replaces the washcloth towel 1 with a new washcloth towel 1 on which time information about a replacement time that expires in future is displayed and hangs the new washcloth towel 1 on the towel hanger 3 so as to be visible at the same service space. |
