Imports In 2020, North Korea imported $3.8k in Calcium phosphates except hydrogen-orthophosphate, becoming the 0th largest importer of Calcium phosphates except hydrogen-orthophosphate in the world. At the same year, Calcium phosphates except hydrogen-orthophosphate was the 0th most imported product in North Korea. North Korea imports Calcium phosphates except hydrogen-orthophosphate primarily from: N/A.