a CPU configured to acquire first information related to a quality of the recovered refrigerant from a first information terminal possessed by a provider of the recovered refrigerant via a communication network, the first information being associated with information identifying a refrigerant container that encloses the recovered refrigerant or associated with information identifying the provider of the recovered refrigerant; and

a storage that stores the first information acquired by the CPU,

the CPU being further configured to provide a second information terminal with second information which is the same as the first information stored in the storage via the communication network, the second information terminal being possessed by an entity different from the provider, wherein

the first information includes regenerated refrigerant information including at least one of composition information, oil information, water information, acid information, weight information, related to a regenerated refrigerant, the regenerated refrigerant information including information recognized by a regenerator when the provider regenerates the recovered refrigerant using the regenerator,

the first information terminal is configured to acquire, by wireless communication, the information recognized by the regenerator from the regenerator, and

the CPU is further configured to acquire, via the communication network, the information acquired from the regenerator by the first information terminal.