A view shows 3D printers installed to mass produce medical equipment to equip health workers and to treat patients at the Cochin Hospital in Paris as the spread of the coronavirus (COVID-19) disease continues in France, April 3, 2020. REUTERS/Gonzalo Fuentes 

Engineers work on 3D printers installed to mass produce medical equipment to equip health workers and to treat patients at the Cochin Hospital in Paris as the spread of the coronavirus (COVID-19) disease continues in France, April 3, 2020. REUTERS/Gonzalo Fuentes 

A doctor walks past 3D printers installed to mass produce medical equipment to equip health workers and to treat patients at the Cochin Hospital in Paris as the spread of the coronavirus (COVID-19) disease continues in France, April 3, 2020. REUTERS/Gonzalo Fuentes 

Engineers work on 3D printers installed to mass produce medical equipment to equip health workers and to treat patients at the Cochin Hospital in Paris as the spread of the coronavirus (COVID-19) disease continues in France, April 3, 2020. REUTERS/Gonzalo Fuentes 

A views shows 3D printers installed to mass produce medical equipment to equip health workers and to treat patients at the Cochin Hospital in Paris as the spread of the coronavirus (COVID-19) disease continues in France, April 3, 2020. REUTERS/Gonzalo Fuentes 

Product developer of Veltio startup company Theodoros Marioglou overlooks the production of face shields with a factory worker, following the outbreak of coronavirus disease (COVID-19) in Thessaloniki, Greece, March 30, 2020. Picture taken March 30, 2020. REUTERS/Alexandros Avramidis 

Workers prepare a billboard for the election campaign of Blue and White Party in a printing house in Tel Aviv February 16, 2020. REUTERS/ Nir Elias 

Workers prepare a billboard for the election campaign of Blue and White Party in a printing house in Tel Aviv February 16, 2020. REUTERS/ Nir Elias 

Workers prepare a billboard for the election campaign of Blue and White Party in a printing house in Tel Aviv February 16, 2020. REUTERS/ Nir Elias 

Workers prepare a billboard for the election campaign of Blue and White Party in a printing house in Tel Aviv February 16, 2020. REUTERS/ Nir Elias 

Workers prepare a billboard for the election campaign of Blue and White Party in a printing house in Tel Aviv February 16, 2020. REUTERS/ Nir Elias 

Workers prepare a billboard for the election campaign of Blue and White Party in a printing house in Tel Aviv February 16, 2020. REUTERS/ Nir Elias 

Workers walk past in front a truck containing paper rolls in the La Prensa newspaper printing plant in Managua, Nicaragua February 7, 2020. REUTERS/Oswaldo Rivas 

A worker walks inside of La Prensa newspaper printing plant in Managua, Nicaragua February 7, 2020. REUTERS/Oswaldo Rivas 

A worker prepares a roll of paper prior to running the presses in the La Prensa newspaper printing plant in Managua, Nicaragua February 7, 2020. REUTERS/Oswaldo Rivas 

Workers from the bookshop called ‘Acqua Alta’ or High Water, try and dry out prints of Venice after heavy flooding caused damage to the premises, in Venice, Italy. November 14, 2019. REUTERS/Flavio Lo Scalzo 

Workers check ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

Workers check ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

Workers check ballots for parliamentary election at a state printing plant in Kiev, Ukraine July 11, 2019. REUTERS/Valentyn Ogirenko 

A worker checks ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

A worker checks ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

Workers check ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

Workers check ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

Workers check ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

A worker checks ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

A worker checks ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

A worker checks ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

Workers check ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

A worker checks ballots for presidential election at a printing plant in Kiev, Ukraine March 21, 2019. REUTERS/Gleb Garanich 

A worker places a printing screen on a t-shirt, before presidential election, in Abuja, Nigeria January 30, 2019. Picture taken January 30, 2019. REUTERS/Afolabi Sotunde. 

A worker places a printing screen on a t-shirt with the words: "Ten million votes for Atiku", before presidential election, in Abuja, Nigeria January 30, 2019. Picture taken January 30, 2019. REUTERS/Afolabi Sotunde. 

A worker removes a printing screen on a t-shirt with the words: "Ten million votes for Atiku", before presidential election, in Abuja, Nigeria January 30, 2019. Picture taken January 30, 2019. REUTERS/Afolabi Sotunde. 

A worker checks ballot papers printed for upcoming Indonesian presidential election at a factory in Jakarta, January 20, 2019. REUTERS/Willy Kurniawan 

A worker checks ballot papers printed for upcoming Indonesian presidential election at a factory in Jakarta, January 20, 2019. REUTERS/Willy Kurniawan 

A worker uses a magnifier as he checks ballot papers printed for upcoming presidential election at a factory in Jakarta, Indonesia January 20, 2019. REUTERS/Willy Kurniawan 

A worker stands as he checks ballot papers printed for the upcoming presidential election at a factory in Jakarta, Indonesia January 20, 2019. REUTERS/Willy Kurniawan 

Workers solder wires on printed circuit boards of a mobile handset at Lava International Limited's manufacturing plant in Noida, India, October 12, 2018. Picture taken October 12, 2018. REUTERS/Anushree Fadnavis 

A worker solders a wire on a printed circuit board of a mobile handset at Lava International Limited's manufacturing plant in Noida, India, October 12, 2018. Picture taken October 12, 2018. REUTERS/Anushree Fadnavis 

A worker checks a PCB (Printed Circuit Board) of a mobile handset at a manufacturing plant of Lava International Limited, in Noida, India, October 12, 2018. Picture taken October 12, 2018. REUTERS/Anushree Fadnavis 

Maite Gomez Carabias prepares to saw a book at Calero's artisan bookbinding and book restoration workshop in Madrid, Spain, September 12, 2018. REUTERS/Susana Vera 

A worker monitors the print quality of Leman weekly satirical magazine in Istanbul, Turkey September 4, 2018. Picture taken September 4, 2018. REUTERS/Osman Orsal 

A Yazidi woman weaves wool at a carpet factory in Dohuk, Iraq July 5, 2018. Picture taken July 5, 2018. REUTERS/Ari Jalal 

A worker prints the date of manufacture on the box of bottled soybean oil, which are made from the U.S. imported soybeans, at the plant of Liangyou Industry and Trade Co., Ltd in Qufu, Shandong province, China July 4, 2018. REUTERS/Jason Lee 

A worker prints a T-shirt, with heat press machine, to be used for a campaign of a political party, at a workshop ahead of general elections in Peshawar, Pakistan June 28, 2018. REUTERS/Fayaz Aziz 

A worker hangs to dry screen-printed banners, to be used for campaigns of political parties, at a workshop ahead of general elections in Karachi, Pakistan June 28, 2018. REUTERS/Akhtar Soomro 

Workers print election posters for National assembly candidates at a printing workshop during the election campaign in Peshawar, Pakistan June 26, 2018. REUTERS/Fayaz Aziz 

Workers print election posters for Provincial assembly candidates at a printing workshop during the election campaign in Peshawar, Pakistan June 26, 2018. REUTERS/Fayaz Aziz 

Workers prepare election posters for National assembly candidate Imran Khan, chairman of the Pakistan Tehreek-e-Insaf (PTI) political party at a printing workshop during the election campaign in Rawalpindi, Pakistan June 25, 2018. REUTERS/Faisal Mahmood 

Workers print election posters for National assembly candidates at a printing workshop during the election campaign in Rawalpindi, Pakistan June 25, 2018. REUTERS/Faisal Mahmood 

A worker monitors the print quality of the daily newspaper Times of Malta as it is printed on a web offset printing machine at Progress Press in Mriehel, Malta, May 10, 2018. REUTERS/Darrin Zammit Lupi 

Workers monitor the print quality of the daily newspaper Times of Malta as it is printed on a web offset printing machine at Progress Press in Mriehel, Malta, May 10, 2018. REUTERS/Darrin Zammit Lupi 

Workers remove plates after the printing of the daily newspaper Times of Malta on a web offset printing press at Progress Press in Mriehel, Malta, May 10, 2018. REUTERS/Darrin Zammit Lupi 

Workers prepare to print the daily newspaper Times of Malta on a web offset printing machine at Progress Press in Mriehel, Malta, May 10, 2018. REUTERS/Darrin Zammit Lupi 

A worker adjusts the print quality of the daily newspaper Times of Malta as it is printed on a web offset printing machine at Progress Press in Mriehel, Malta, May 10, 2018. REUTERS/Darrin Zammit Lupi