Imports In 2022, Bhutan imported $31 in Calcium phosphates except hydrogen-orthophosphate, becoming the 164th largest importer of Calcium phosphates except hydrogen-orthophosphate in the world. At the same year, Calcium phosphates except hydrogen-orthophosphate was the 3292nd most imported product in Bhutan. Bhutan imports Calcium phosphates except hydrogen-orthophosphate primarily from: N/A.