What does China Mobile mean by charging service?

Take China Mobile as an example, it corresponds to the "charge on behalf of the bill", and the expenses other than the communication fees (voice, SMS, MMS, WAP, IVR) generated by customers using Monternet services. The total amount of the charge deduction record of the agency charge business shall be consistent with the amount of the "agency charge business" in the bill. For details, please check the bill of China Mobile's online business hall.