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Is the installation line of residential charging pile surface-mounted or concealed?

The dark line is not recommended to take the open line, but the dark line is safe. Open wires are easy to be dangerous, and dark wires are safer. You have to apply to the property, and the power supply line must meet the safety regulations, that is to say, it must meet the fire safety regulations. It is not allowed to install charging piles with open wires or flying wires to prevent fire.