The service requires a person to provide the service is important. Therefore, if there is no customer service over time. It will be served at. Loss expense in labour benefits by blank Not cause any revenue.
The service requires users to provide a key. So if customers use the service for a certain period. Service staff will be laid off The loss cost labor in vain. It does not cause any income.
The service must rely on the people in the service is important. So if there is no customer service in a certain period of time. Service staff will be unemployed. Loss of cost of labor in vain. Do not cause any income