Imports In 2022, Mongolia imported $149k in Sodium hydroxide (caustic soda) in aqueous solution, becoming the 133rd largest importer of Sodium hydroxide (caustic soda) in aqueous solution in the world. At the same year, Sodium hydroxide (caustic soda) in aqueous solution was the 1789th most imported product in Mongolia. Mongolia imports Sodium hydroxide (caustic soda) in aqueous solution primarily from: China ($115k), Russia ($28k), South Korea ($3.8k), Germany ($1.28k), and France ($256).