In order to be responsible for the customer, it is not allowed to make random evaluation (including specific or approximate maintenance costs) on the phone before checking the electrical fault, and the maintenance costs can only be reported after the actual startup check about the fault.

However, if the customer's address is remote, the technical department can report the required expenses to the customer after consulting the general expenses according to the electrical faults reported by the customer. After arriving at the customer's address on time, you should wear your badge first, and then ring the doorbell. If there is no doorbell at the customer's house, you should knock at the customer's house three or four times in a row, and you should not knock at the customer's house with brute force or irregularly. After the customer opens the door, wear a shoe cover before entering the customer's room. If there is no floor and carpet in the customer's room, you don't have to wear a shoe cover if the customer asks.