Photo taken on Feb. 19, 2020 shows the exhibition area of Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany. (Photos: Xinhua)

Photo taken on Feb. 19, 2020 shows the exhibition area of Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany.

Photo taken on Feb. 19, 2020 shows the exhibition area of Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany.

People visit the exhibition area of Huawei at Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany, Feb. 19, 2020.

Photo taken on Feb. 19, 2020 shows the opening ceremony of Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany.

Honored guests speak during the opening ceremony of Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany, Feb. 19, 2020.

Photo taken on Feb. 19, 2020 shows the exhibition area of Bosch ConnectedWorld 2020, the annual conference on the internet of things (IoT) held by German engineering and technology company Bosch in Berlin, Germany.