() In the realization of actual sales activities, Party B has the responsibility to user information and timely feedback to the owner, so that Party on the user's service record, track.
() After the actual sales behavior, Party B is responsible for timely feedback of user information to Party A, so that Party A to record and track the user's after-sales service.
() after the actual sales behavior is realized, Party B has the responsibility to feed back the user information to Party A in time, so that Party A can record and track the user's after-sales service.