Flights have been cancelled, traffic disrupted and hospital wards filled with patients, but one part of the Chinese economy is benefiting from Beijing’s toxic air pollution.
Sellers of air purifiers and face masks sold out of many of their most popular products this week as the Chinese capital was smothered in a cloud of hazardous, choking smog for the fourth time in less than a month.
Executives and sales agents for these companies estimate that sales of air-purifying machines have more than tripled over the past month as northern China has been hit by air pollution emergencies.
您已阅读25%（584字），剩余75%（1796字）包含更多重要信息，订阅以继续探索完整内容，并享受更多专属服务。