Beijing’s zero-COVID policies are straining U.S. companies in China, slashing yearly profit projections, disrupting supply chains and upending normal business operations in a variety of ways, according to a “flash survey” conducted by the American Chamber of Commerce in China. The survey was conducted from April 29 to May 5 and published this week, with 121 companies responding. All of the survey respondents said recent policies enacted by China in response to a recent COVID-19 flareup have impacted their operations...