Pieces of leather to make shoes and boots are displayed at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

Pieces of leather to make shoes and boots are pictured at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

An employee checks pieces of leather to make shoes and boots at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

Pieces of sole leather for shoes and boots are displayed at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

An employee checks pieces of leather to make shoes and boots at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

An employee works on a piece of leather to make shoes and boots at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

An employee works on a piece of leather to make shoes and boots at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

An employee inspects pieces of leather to make shoes and boots at the Tannery Bastin of shoemaker J.M. Weston in Saint-Leonard-de-Noblat, France, November 15, 2018. REUTERS/Regis Duvignau

Men row a boat in the river Ganges as smoke emits from a chimney of a leather tannery at an industrial area in Kanpur, India, May 4, 2018. Picture taken May 4, 2018. REUTERS/Adnan Abidi

Smoke billows as a truck drives past the waste of leather tanneries at a dumpyard in Kanpur, India, May 3, 2018. Picture taken May 3, 2018. REUTERS/Adnan Abidi

Chimneys of leather tanneries are seen in Kanpur, India, May 3, 2018. Picture taken May 3, 2018. REUTERS/Adnan Abidi

A boy jumps over a drain flowing with waste water from the leather tanneries into the river Ganges in Kanpur, India, May 3, 2018. Picture taken May 3, 2018. REUTERS/Adnan Abidi

Untreated waste water from leather tanneries flow into the river Ganges in Kanpur, India, May 3, 2018. Picture taken May 3, 2018. REUTERS/Adnan Abidi

A worker wearing a mask pauses as he works inside a leather tannery at an industrial area in Kanpur, India, May 3, 2018. Picture taken May 3, 2018. REUTERS/Adnan Abidi

A man stands on a hill as smoke emits from a chimney of a leather tannery at an industrial area in Kanpur, India, May 4, 2018. Picture taken May 4, 2018. REUTERS/Adnan Abidi

A worker makes leather belts outside a tannery on the banks of river Ganges in Kanpur, India, May 4, 2018. Picture taken May 4, 2018. REUTERS/Adnan Abidi

Workers carry leather in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

Ahmed El Gabbas (R), Managing Director of Al Rowad Leather Tannery speaks with workers in the factory at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

Ahmed El Gabbas, Managing Director of Al Rowad Leather Tannery, speaks during an interview with Reuters at the factory in El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

A worker carries leather in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

A worker stretches leather in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

Workers stretch leather at machine in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

A worker looks on near leather in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

Ahmed El Gabbas, Managing Director of Al Rowad Leather Tannery, speaks during an interview with Reuters at the factory in El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

A worker carries a piece of leather in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

A worker removes impurities on leather in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

Workers go about their day in the factory of Al Rowad Leather Tannery at El Robbiki Leather City in Badr City, east of Cairo, Egypt, August 14, 2017. Picture taken August 14, 2017. REUTERS/Amr Abdallah Dalsh

Tanner Bryan Walsh poses for a photograph in Dick Mack's pub which operates as a tannery and public house in Dingle, Ireland August 11, 2017. REUTERS/Clodagh Kilcoyne

Bryan Walsh makes a belt in Dick Mack's pub which operates as a tannery and public house in Dingle, Ireland August 11, 2017. REUTERS/Clodagh Kilcoyne

Bryan Walsh makes a belt in Dick Mack's pub which operates as a tannery and public house in Dingle, Ireland August 11, 2017. REUTERS/Clodagh Kilcoyne

Bryan Walsh makes a belt in Dick Mack's pub which operates as a tannery and public house in Dingle, Ireland August 11, 2017. REUTERS/Clodagh Kilcoyne

Bryan Walsh makes a belt in Dick Mack's pub which operates as a tannery and public house in Dingle, Ireland August 11, 2017. REUTERS/Clodagh Kilcoyne

An employee works inside a leather tannery at an industrial area in Kanpur, India, April 1, 2017. REUTERS/Danish Siddiqui SEARCH "SIDDIQUI GANGES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Dyed crocodile skins hang at a crocodile leather tannery in Samut Prakan province, Thailand, May 24, 2017. REUTERS/Athit Perawongmetha SEARCH "PERAWONGMETHA CROCODILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Workers spray coating colour on dyed crocodile skins at a crocodile leather tannery in Samut Prakan province, Thailand, May 24, 2017. REUTERS/Athit Perawongmetha SEARCH "PERAWONGMETHA CROCODILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Dyed crocodile skin is seen at a tannery in Samut Prakan province, Thailand, May 24, 2017. REUTERS/Athit Perawongmetha SEARCH "PERAWONGMETHA CROCODILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Thailand is home to some of the world's biggest crocodile farms, where tourists can see the giant reptiles lounging in the hot sun, chomping on chicken, or swarming in emerald green pools. Some 1.2 million crocodiles are kept on more than 1,000 farms in Thailand, according to figures from the Thai department of fisheries. Some are equipped with slaughterhouses and tanneries to produce luxury products. REUTERS/Athit Perawongmetha SEARCH "PERAWONGMETHA CROCODILE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: THAILAND-CROCODILES/

A carriage transports leather to a tannery workshop in Cairo, Egypt May 26, 2016. REUTERS/Mohamed Abd El Ghany

A labourer works in a leather tannery workshop where Co-founders of a local brand "Okhtein", sisters Aya and Mounaz Abdelraouf purchase leather in Cairo, Egypt May 26, 2016. REUTERS/Mohamed Abd El Ghany

A worker looks on in a leather tannery workshop where Co-founders of a local brand "Okhtein", sisters Aya and Mounaz Abdelraouf purchase leather in Cairo, Egypt May 26, 2016. REUTERS/Mohamed Abd El Ghany

A labourer works in a leather tannery where Co-founders of a local brand "Okhtein", sisters Aya and Mounaz Abdelraouf purchase leather in Cairo, Egypt May 26, 2016. REUTERS/Mohamed Abd El Ghany

Co-founders of local brand "Okhtein", sisters Aya and Mounaz Abdelraouf, check leather's quality at a tannery in Cairo, Egypt May 26, 2016. REUTERS/Mohamed Abd El Ghany

A labourer works in a leather tannery where Co-founders of a local brand "Okhtein", sisters Aya and Mounaz Abdelraouf, purchase leather in Cairo, Egypt May 26, 2016. REUTERS/Mohamed Abd El Ghany

A man processes tannery wastes to make poultry feed at Hazaribagh along the polluted Buriganga river in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT TPX IMAGES OF THE DAY BUSINESS EMPLOYMENT)

A woman collects garbages from a dump yard near a tannery at Hazaribagh along the polluted Buriganga river in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT)

A man carries an umbrella as he crosses a bamboo made bridge near a tannery at Hazaribagh along the polluted Buriganga river in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT)

Workers carry tannery wastes to make poultry feed at Hazaribagh along the polluted Buriganga river in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT BUSINESS EMPLOYMENT)

A woman crosses a bridge with her child next to a tannery factory at Hazaribagh along the polluted Buriganga river in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT)

Children play on waste products to be processed at a tannery at Hazaribagh along the polluted Buriganga river in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT TPX IMAGES OF THE DAY SOCIETY)

Workers pull a cart full of drums next to a cannel with tannery waste at Hazaribagh, along the polluted Buriganga river, in Dhaka June 5, 2014. Bangladesh's Prime Minister Sheikh Hasina warned the tannery owners at Hazaribag of serious consequence if they failed to relocate their tanneries in Savar within the stipulated time, during a World Environment Day observance program, local media reported. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Andrew Biraj (BANGLADESH - Tags: ENVIRONMENT BUSINESS EMPLOYMENT SOCIETY)

The University of Waterloo's start-up incubator Velocity, which is located in Kitchener's historic Tannery District, is pictured in Kitchener, Ontario, March 18, 2014. Start-ups can also draw on engineering talent from the University of Waterloo, which has the world's largest internship program of its type, requiring students to complete four to six internships as part of a four-year degree course. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

A piece of modern art hangs on the wall within Communitech in Kitchener's historic Tannery District in Kitchener, Ontario, March 18, 2014. Kitchener, historically the blue-collar twin to the university city of Waterloo, is today home to chic offices such as the Communitech building - a converted brick structure in the the historic Tannery District, adorned with modern art, which acts as an unofficial clubhouse for many small tech companies. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

Iain Klugman, the chief executive of Communitech, speaks about the tech start-up boom within the Kitchener-Waterloo region, at Communitech in Kitchener, Ontario, March 18, 2014. Kitchener, historically the blue-collar twin to the university city of Waterloo, is today home to chic offices such as the Communitech building - a converted brick structure in the the historic Tannery District, adorned with modern art, which acts as an unofficial clubhouse for many small tech companies. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

People huddle in discussion within Communitech in Kitchener's historic Tannery District in Kitchener, Ontario, March 18, 2014. Kitchener, historically the blue-collar twin to the university city of Waterloo, is today home to chic offices such as the Communitech building - a converted brick structure in the the historic Tannery District, adorned with modern art, which acts as an unofficial clubhouse for many small tech companies. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

Modern art and graffiti artworks adorn the walls within Communitech in Kitchener's historic Tannery District in Kitchener, Ontario, March 18, 2014. Kitchener, historically the blue-collar twin to the university city of Waterloo, is today home to chic offices such as the Communitech building - a converted brick structure in the the historic Tannery District, adorned with modern art, which acts as an unofficial clubhouse for many small tech companies. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

Major technology companies like Google and BlackBerry provide mentoring services to companies within Communitech in Kitchener's historic Tannery District in Kitchener, Ontario, March 18, 2014. Kitchener, historically the blue-collar twin to the university city of Waterloo, is today home to chic offices such as the Communitech building - a converted brick structure in the the historic Tannery District, adorned with modern art, which acts as an unofficial clubhouse for many small tech companies. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

The facade of Communitech in Kitchener's historic Tannery District in Kitchener, Ontario, is seen March 18, 2014. Kitchener, historically the blue-collar twin to the university city of Waterloo, is today home to chic offices such as the Communitech building - a converted brick structure in the the historic Tannery District, adorned with modern art, which acts as an unofficial clubhouse for many small tech companies. Picture taken March 18, 2014. REUTERS/Euan Rocha (CANADA - Tags: EDUCATION SCIENCE TECHNOLOGY BUSINESS)

Men work in a leather tannery in Niamey, September 14, 2013. Picture taken September 14, 2013. To match Special Report NIGER-AREVA/ REUTERS/Joe Penney (NIGER - Tags: AGRICULTURE BUSINESS EMPLOYMENT SOCIETY)

Men fish in the Niger River in Niamey, September 14, 2013. Picture taken September 14, 2013. To match Special Report NIGER-AREVA/ REUTERS/Joe Penney (NIGER - Tags: AGRICULTURE ENVIRONMENT BUSINESS EMPLOYMENT SOCIETY)