How to install charging device on airport chair?

Airport chairs now have a variety of  charging devices,

1. Common scanning code charging.

2. USB plug and three-pin plug are installed directly between the seats.

3. USB plug is installed on the Armrest of Chair..

4. Install a wireless charging pad or USB plug on the coffee table.

All the charging devices must be installed by professional manufacturers, and the airport is designed to complete the wiring. It must not be connected privately to avoid electric leakage accidents, and it is also necessary to be equipped with children including devices.