US President barack Obama called it "the world's leading industrial technology fair". Angela merkel, Germany's chancellor, called it "the biggest industrial event".

      It is the Hanover messe, the world's leading industrial technology fair, which brings together political and business leaders from around the world every year. Industry 4.0 is booming, and hannover expo has been a strong promoter of this theme since its inception.

      The 2019 Hanover messe, which will be held at the Hanover exhibition center in Germany from April 1-5, will showcase a full range of industrial technologies from automation and robotics, software and IT, powertrain and fluid technology to integrated energy systems, subcontracting and lightweight design, and research and development. With the theme of "industry integration -- interconnection and cooperation", the exhibition aims to build an international platform for industry 4.0. It has six exhibitions covering integrated automation and power transmission technology exhibition, digital factory exhibition, energy exhibition, air pressure and vacuum technology exhibition, industrial spare parts and subcontracting technology exhibition, research and technology exhibition. Participate in the world's leading industrial technology exhibition, master professional industry information. Six major professional exhibitions were held at the same time, bringing together suppliers and users, displaying new technologies and discovering new business opportunities. About 6,551 exhibitors and 225,000 visitors from 88 countries and regions will attend the exhibition. The partner country of hannover expo 2019 is Sweden.