Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
Workers manufacture facial masks at a factory in Shanghai on February 4, 2020. All the 17 companies in the city that manufacture facial masks resume production and are increasing output capacity. （Photo: China News Service/Tang Yanjun）
