Workers produce masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Workers package masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Workers produce masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Photo shows masks produced at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Workers package masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

A worker produces masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

A worker produces masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Workers produce masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Workers produce masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Hu Xiaojun (R), general manager of Ningbo A Plus Import and Export Co., Ltd. of China, instructs a worker to produce masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)

Workers produce masks at a factory in the free industrial zone of Cairo, capital of Egypt, April 14, 2020. Inside a joint Egypt-China plant inaugurated last week in the free industrial zone of Cairo, people are working day and night to run five advanced machines introduced from China to produce up to 750,000 medical face masks per day. (Xinhua/Wu Huiwo)