Rock Phosphate Heat-Treated Fertilizer from China
Rock phosphate that has been heat-treated beyond simple impurity removal, such as calcination, to improve its fertilizing properties. This product falls under Chapter 31 Note 3(a)(ii) as a calcined natural phosphate fertilizer.
Duty Rate — China → Canada
0%
Import Tips
• Distinguish the heat treatment from mere impurity removal; only calcined or further heat-treated natural phosphates qualify
• Maintain processing records to show the treatment level
• Check that the product is not in heading 31.05 retail packaging