The queues of container ships outside major Chinese ports are lengthening by the day as COVID-19 outbreaks in manufacturing export hubs threaten to unleash a fresh wave of global supply chain shocks, ship owners, logistics firms and analysts say.  China is experiencing its biggest spike in COVID-19 infections since an initial outbreak in the central city of Wuhan was contained in early 2020. read more  The spread of the highly-infectious Omicron variant this month has led to movement controls across China, including in key manufacturing hubs of Shenzhen and Dongguan, paralysing ...