Even though Shenzhen, China, allowed factories and public transport to restart Friday after six days of lockdowns to mitigate the spread of COVID-19, global supply chains have already been impacted. A.P. Møller – Maersk A/S, the world’s largest container shipping company by capacity, told clients China’s zero-tolerance approach against the virus has already produced new supply chain snarls and logistical delays. “While manufacturing also takes place in other parts of the country, these delays will still affect output, though not drastically,” Maersk said in a memo to clients obtained by Bloomberg. Maersk has activated contingency plans in China following the...