BusinessHanover industry fair opensTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBusinessMichael Wetzel04/24/2017April 24, 2017The world's biggest industrial fair has opened its doors in Hanover. Partner-nation Poland is in the spotlight. The country is aiming to bring Industry 4.0 to its factory floors. https://p.dw.com/p/2bm4hAdvertisement