Source
Comments
The company report that it does not record NOX and SOX emissions hence, marked unknown.
pg. 106
"GRI 305-7
Nitrogen oxides (NOX), sulfur oxides (SOX), and other significant air emissions
Considering the nature of its business, the Salvatore Ferragamo Group has not identified significant emissions of NO x, SOx, or other gases in 2019 and 2018."