This picture taken on April 1, 2019 shows recyclable plastic samples in a laboratory at the premises of Carbios, in Saint-Beauzire, central-southern France. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

Carbios' Scientific Director Alain Marty (C) stands in a laboratory at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

Carbios' Scientific Director Alain Marty poses for a picture at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

This picture taken on April 1, 2019 shows the word "plastics" translated in different languages on a bag at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

A technician oversees a chemical manipulation in a laboratory at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

This picture taken on April 1, 2019 shows recyclable plastic samples in a laboratory at the premises of Carbios, in Saint-Beauzire, central-southern France. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

This picture shows recyclable plastic samples in test tubes in a laboratory at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

Carbios' Scientific Director Alain Marty (C) stands in a laboratory at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

Carbios company's logo is seen on a lab coat at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

This picture taken on April 1, 2019 shows a chemical transformation in a reactor at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)

A technician oversees a chemical manipulation on a Carbios reactor at the premises of Carbios, in Saint-Beauzire, central-southern France, on April 1, 2019. - Carbios found an enzyme to recycle PET (polyethylene terephthalate) which is used to make plastic bottles. (Photo by Thierry Zoccolan / AFP)