SHANGHAI – China has ordered a seven-day lockdown of the area around Foxconn Technology Group’s main plant in Zhengzhou, a move that will severely curtail shipments in and out of the world’s largest iPhone factory. The lockdown will last until Nov 9, the local government said in a statement posted to its WeChat account. The abrupt action reflects Beijing’s Covid Zero approach to stamping out outbreaks, and is likely to further disrupt Foxconn’s main operations base. The Taiwanese company, whose main listed arm is Hon Hai Precision Industry, is grappling with a Covid-19 flare-up that forced some of its 200,000...