Imports In 1995, Malawi imported $47k in Refined sulphur, not sublimate, precipitate, colloida, becoming the N/A largest importer of Refined sulphur, not sublimate, precipitate, colloida in the world. At the same year, Refined sulphur, not sublimate, precipitate, colloida was the N/A most imported product in Malawi. Malawi imports Refined sulphur, not sublimate, precipitate, colloida primarily from: N/A.