Imports In 2008, Saint Vincent and the Grenadines imported $303 in Hexamethylenediamine, its salts, becoming the 0th largest importer of Hexamethylenediamine, its salts in the world. At the same year, Hexamethylenediamine, its salts was the 0th most imported product in Saint Vincent and the Grenadines. Saint Vincent and the Grenadines imports Hexamethylenediamine, its salts primarily from: N/A.