China's COVID curbs set to tighten global supply chain pinch

Manufacturers of everything from flash drives to glass for Apple iPhone screens are warning of shipment delays as they comply with Chinese controls to curb the spread of COVID-19, further straining global supply chains.

Authorities across China are trying to try stem the spread of the country's worst COVID-19 outbreak in two years, putting millions of people in lockdown, curbing transport and shutting factories.

Some of the toughest measures have been applied in the key manufacturing hubs of Shenzhen, Dongguan and Changchun, as well as the Chinese financial centre of Shanghai, which is home to the world's busiest container port.