The Excel file that contains packaging data for Intermarché / Les Mousquetaires products has 1 line for each product / packaging component / packaging material combination.
Packaging components can have multiple materials (e.g. a lid may be 95% steel and 5% plastic), which is currently not supported in the OFF packagings structure.
This script filters the CSV file corresponding to the Excel file in order to keep only the dominant material of each packaging component.