| Vendor | Spec | Unit | Price | Currency | Date |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 986.89 | USD | 20251021 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 984.5 | USD | 20251009 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251003 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251002 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20251001 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 983.81 | USD | 20250928 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250925 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250924 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 984.45 | USD | 20250922 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250920 |