A worker makes rope net at a rope net company in Lizhuang Township of Huimin County, east China's Shandong Province, March 22, 2020. Rope net companies in Lizhuang Township of Huimin County have resumed production in recent days under strict measures taken to fight against the COVID-19. Lizhuang Township has 607 chemical fiber rope net companies and more than 3,200 self-employed production households, producing rope net products of over one million tonnes annually. (Photo by Chu Baorui/Xinhua]

A worker makes rope net at a rope net company in Lizhuang Township of Huimin County, east China's Shandong Province, March 22, 2020. Rope net companies in Lizhuang Township of Huimin County have resumed production in recent days under strict measures taken to fight against the COVID-19. Lizhuang Township has 607 chemical fiber rope net companies and more than 3,200 self-employed production households, producing rope net products of over one million tonnes annually. (Photo by Chu Baorui/Xinhua)

A worker makes rope net at a rope net company in Lizhuang Township of Huimin County, east China's Shandong Province, March 22, 2020. Rope net companies in Lizhuang Township of Huimin County have resumed production in recent days under strict measures taken to fight against the COVID-19. Lizhuang Township has 607 chemical fiber rope net companies and more than 3,200 self-employed production households, producing rope net products of over one million tonnes annually. (Photo by Chu Baorui/Xinhua)

A worker makes rope net at a rope net company in Lizhuang Township of Huimin County, east China's Shandong Province, March 22, 2020. Rope net companies in Lizhuang Township of Huimin County have resumed production in recent days under strict measures taken to fight against the COVID-19. Lizhuang Township has 607 chemical fiber rope net companies and more than 3,200 self-employed production households, producing rope net products of over one million tonnes annually. (Photo by Chu Baorui/Xinhua)

A worker monitors a production line of sanitizer at a workshop in Harbin, capital of northeast China's Heilongjiang Province, March 23, 2020. Enterprises producing disinfection products in Heilongjiang resumed fully operation to meet the needs of market. (Xinhua/Zhang Tao)

A worker inspects products at a production line of sanitizers in workshop in Harbin, capital of northeast China's Heilongjiang Province, March 23, 2020. Enterprises producing disinfection products in Heilongjiang resumed fully operation to meet the needs of market. (Xinhua/Zhang Tao)

A worker monitors a production line of sanitizer at a workshop in Harbin, capital of northeast China's Heilongjiang Province, March 23, 2020. Enterprises producing disinfection products in Heilongjiang resumed fully operation to meet the needs of market. (Xinhua/Zhang Tao)

Employees work at a sanitizer products workshop in Harbin, capital of northeast China's Heilongjiang Province, March 23, 2020. Enterprises producing disinfection products in Heilongjiang resumed fully operation to meet the needs of market. (Xinhua/Zhang Tao)

A worker inspects products at a production line of sanitizers in workshop in Harbin, capital of northeast China's Heilongjiang Province, March 23, 2020. Enterprises producing disinfection products in Heilongjiang resumed fully operation to meet the needs of market. (Xinhua/Zhang Tao)

A worker monitors a production line of sanitizer at a workshop in Harbin, capital of northeast China's Heilongjiang Province, March 23, 2020. Enterprises producing disinfection products in Heilongjiang resumed fully operation to meet the needs of market. (Xinhua/Zhang Tao)