Foxconn Technology Group, the world’s largest electronics contract manufacturer and Apple’s prime supplier, has halted production at two of its factories in the eastern city of Kunshan, putting further strain on the US technology giant’s supply chain in mainland China. Operations at those plants have been suspended since Wednesday last week, with all employees confined to dormitories inside those campuses after new Covid-19 cases were reported on site, according to two workers at the affected factories, who declined to be named because they are not authorised to speak to media. Those two dormitories have been put under strict lockdown, according...