Abstract: Provided is a cleaning member, comprising an elastic member that includes polyurethane, wherein: when tan ? of a test piece sampled from the elastic member is measured in the temperature range of ?20° C. to +60° C., the peak temperature of a peak indicating the maximum value of tan ? is at 15.0° C. or below; the maximum value of tan ? is 0.20 to 0.55; tan ? at a temperature of 55° C. is 0.13 or larger; and where the detected quantity of all ions obtained when the test piece is heated at a rate of temperature increase of 10° C./second to 1000° C. using a direct-sampling mass spectrometer is M1 and the integrated intensity of a peak in a derived ion thermogram that corresponds to a range of m/z values originating in multifunctional isocyanate with at least three isocyanate groups is M2, M2/M1 is at least 0.001.

Abstract: A system for managing a selling system for shipping out an item from a warehouse or a nearest base associated with a delivery destination, includes an instruction unit configured to, before receiving an order placement for an item from a customer, transmit, to a warehouse server associated with the warehouse or a relay base server associated with a relay base, a transportation instruction for transporting the item to the nearest base from the warehouse or the relay base, and to, after receiving the order placement for the item from the customer, transmit, to a nearest base server associated with the nearest base, a submission instruction for submitting the ordered item to the customer.

Abstract: A system for managing a selling system for shipping out an item from a warehouse or a nearest base associated with a delivery destination, includes an instruction unit configured to, before receiving an order placement for an item from a customer, transmit, to a warehouse server associated with the warehouse or a relay base server associated with a relay base, a transportation instruction for transporting the item to the nearest base from the warehouse or the relay base, and to, after receiving the order placement for the item from the customer, transmit, to a nearest base server associated with the nearest base, a submission instruction for submitting the ordered item to the customer.