A refrigerating system including an air conditioning system and a cooler system is provided. Preferably, the scrim includes a cleaning composition having at least one surfactant. The synchronization control apparatus 104 performs synchronization control of the projector 102 and the camera 103 based on an instruction from the PC 101. Customer churn information may include information related to customer churn rates, lost profits, likelihood-to-churn rates, and likelihood-to-churn rates for important customers.