1) When a customer calls to make an appointment, a maintenance work order is created. When the customer states the automobile fault or fault phenomenon, record relevant information.

2) Create an independent maintenance work order item for each planned maintenance activity or operation, including the detailed information of automobile parts and spare parts to be used and the work arrangement of maintenance workers.

3) Make sure that all necessary auto parts are in stock before making an appointment.

4) It is necessary to arrange a maintenance workshop with suitable equipment and automobile maintenance equipment with suitable conditions for each maintenance order.

5) estimate the total cost, and then the customer approves the appointment; Or terminate the maintenance plan and then cancel the repair order.

6) Before the scheduled arrival, immediately assemble the required auto parts, spare parts, auto maintenance tools and auto maintenance equipment in the selected maintenance workshop.

7) When the customer arrives, perform less planned maintenance activities.

8) Record the actual value and maintenance man-hour cost of the used automobile parts.

9) After all maintenance is completed, calculate the total cost.

10) Create an invoice and give it to the customer.