| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Tianyi Chem | China national standards | MT | 590.43 | USD | 20251231 |
| Shifang Yufeng Chem | China national standards | MT | 710.92 | USD | 20251229 |
| Hunan Meiao Potassium | China national standards | MT | 753.58 | USD | 20251229 |
| Hunan Meiao Potassium | China national standards | MT | 753.58 | USD | 20251229 |
| Shanxi Wojin | China national standards | MT | 653.48 | USD | 20251225 |
| Unknown | China national standards | MT | 930.0 | USD | 20210323 |
| Unknown | China national standards | MT | 10880.0 | USD | 20210323 |
| Unknown | China national standards | MT | 1000.0 | USD | 20210322 |
| Unknown | China national standards | MT | 730.0 | USD | 20210321 |
| Unknown | China national standards | MT | 1670.0 | USD | 20210321 |