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How does China Unicom send short messages to close its business?

If the closing service you are consulting is to cancel the value-added service, I suggest you log on to the homepage of Unicom's online business hall and click Business Handling > Other Services > Value-added Services > My New Service > Business Unsubscribe. The service you ordered will be displayed on the interface. After finding the service you want to unsubscribe, you can unsubscribe from the value-added service. If this is not the case, you can contact customer service at the place of origin.