Bill Russo moved more than 700 miles from Beijing to Shanghai on Dec. 1 and thought he’d left the smog behind him. Five days later, he was wheezing again. “What was shocking was how bad it’s been,” said Russo, a vice president at car stereo maker Harman International Industries Inc. “Shanghai over the years had a reputation of being better,” said the executive, who had some of the fine-particle masks he left behind in Beijing sent to him. Record levels of pollution this month busted perceptions of Shanghai as a place to escape the smog that’s shrouded Beijing and other parts of China. Worsening air quality in the country’s commercial hub prompted warnings to keep children indoors, spurred companies from Unilever to Uniqlo owner Fast Retailing Co. to give workers face masks, and may hinder Shanghai’s push to be a global financial center by 2020. “I […]