| Vendor | Spec | Unit | Price | Currency | Date |
| Guizhou Wengfu | China national standards | MT | 3905.06 | USD | 20260327 |
| Guizhou Wengfu | China national standards | MT | 3909.87 | USD | 20260326 |
| Guizhou Wengfu | China national standards | MT | 3860.05 | USD | 20260325 |
| Guizhou Wengfu | China national standards | MT | 3765.88 | USD | 20260323 |
| Kunming Yuntianhua | China national standards | MT | USD | 20260205 | |
| Jiangsu Shenrong Chem | China national standards | MT | USD | 20251205 | |
| Jiangsu Shenrong Chem | China national standards | MT | USD | 20251204 | |
| Jiangsu Shenrong Chem | China national standards | MT | USD | 20251203 | |
| Jiangsu Shenrong Chem | China national standards | MT | USD | 20251201 | |
| Jiangsu Shenrong Chem | China national standards | MT | USD | 20251128 |