| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 788.12 | USD | 20251003 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 787.74 | USD | 20250929 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 787.05 | USD | 20250928 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 787.05 | USD | 20250927 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 787.05 | USD | 20250926 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 788.1 | USD | 20250925 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 802.17 | USD | 20250924 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 802.17 | USD | 20250923 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 801.62 | USD | 20250922 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 801.37 | USD | 20250919 |