At an air conditioner factory run by Midea Group, a leading Chinese home appliance manufacturer, in the Shunde district of Foshan, Guangdong province, workers are putting in overtime to ramp up production of portable split air conditioners.

Sales of portable air conditioners manufactured by Chinese companies have skyrocketed this summer, with most products out of stock in Western European home appliance stores.

Midea, Gree, Haier and others report sold-out portable units as extreme heat exposes Europe’s low household cooling penetration and difficult installation marke

At an air conditioner factory run by Midea Group, a leading Chinese home appliance manufacturer, in the Shunde district of Foshan, Guangdong province, workers are putting in…