| Vendor | Spec | Unit | Price | Currency | Date |
| Ertai Hainan | China national standards | MT | 3058.54 | USD | 20251017 |
| Jiangsu Shenrong Chem | China national standards | MT | 3044.44 | USD | 20251017 |
| Ertai Hainan | China national standards | MT | 3055.43 | USD | 20251014 |
| Ertai Hainan | China national standards | MT | 3068.35 | USD | 20251011 |