| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 953.56 | USD | 20251009 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 956.37 | USD | 20251009 |
| Shanghai Ronghe Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20250930 |