At this year’s Hannover Messe, the world’s biggest industrial fair, it was one of the stars of the show: an elegant, ultra-sensitive robot known as an Iiwa that can pour a beer and brew a cup of coffee.

Angela Merkel and Barack Obama, guests of honour on the Messe’s opening day, were intrigued. “Can it squeeze lemons?” the German chancellor asked.

The Iiwa — or intelligent industrial work assistant — is produced by Kuka, one of Germany’s most innovative engineering companies. But it will not be entirely German for long. Less than a month after the fair, a Chinese appliance-maker called Midea offered to buy Kuka for €4.5bn, in the largest ever Chinese takeover of a German company.