<span style="display: inline-block; border-radius: 50%; text-align: center; font-size: 30px; vertical-align: middle;">②</span> - A power bank with a display and Type-C output port, which can be used to power up the demonstration suitcase; | <span style="display: inline-block; border-radius: 50%; text-align: center; font-size: 30px; vertical-align: middle;">②</span> - A power bank with a display and Type-C output port, which can be used to power up the demonstration suitcase; |