| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 844.5 | USD | 20251010 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 843.86 | USD | 20251009 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 844.42 | USD | 20251008 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 844.42 | USD | 20251003 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 844.01 | USD | 20250929 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 843.27 | USD | 20250928 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 843.27 | USD | 20250927 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 843.27 | USD | 20250926 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 844.39 | USD | 20250925 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 844.39 | USD | 20250924 |