Imports In 2005, Guinea-Bissau imported $192k in Onions prepared or preserved by vinegar, becoming the 0th largest importer of Onions prepared or preserved by vinegar in the world. At the same year, Onions prepared or preserved by vinegar was the 0th most imported product in Guinea-Bissau. Guinea-Bissau imports Onions prepared or preserved by vinegar primarily from: N/A.