In 2018, Top
importers of
Porphyry, sylnite, etc, merely cut into a squar from
Netherlands were Germany ($471.59K , 840,809 Kg), Belgium ($355.11K , 5,288,050 Kg), United Kingdom ($283.10K , 11,094,000 Kg), Poland ($184.12K , 20,466 Kg), Austria ($47.27K , 51,981 Kg).
Porphyry, sylnite, etc, merely cut into a squar exports by country in 2018