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See Chinese contents: GB 1903.50-2020 GB 1903.50-2020: National food safety standard - Food nutritional fortification substance - Cholecalciferol (Vitamin D3)
This Standard is applicable to food nutritional fortification substance - cholecalciferol (Vitamin D3), which uses lanolin cholesterol as raw material, by chemical synthesis, to obtain 7-dehydrocholesterol, then is made through UV irradiation, refining and other processes.
