Imports In 2022, Democratic Republic of the Congo imported $313k in Polymer Ion-Exchangers, becoming the 100th largest importer of Polymer Ion-Exchangers in the world. At the same year, Polymer Ion-Exchangers was the 731st most imported product in Democratic Republic of the Congo. Democratic Republic of the Congo imports Polymer Ion-Exchangers primarily from: China ($153k), Germany ($61.2k), India ($53.8k), Zambia ($25.7k), and South Africa ($17k).