| Vendor | Spec | Unit | Price | Currency | Date |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 989.2 | USD | 20251208 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 989.27 | USD | 20251201 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251128 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 988.76 | USD | 20251126 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 987.65 | USD | 20251121 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 987.78 | USD | 20251111 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 988.2 | USD | 20251107 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 987.77 | USD | 20251103 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 986.92 | USD | 20251026 |
| ShanDong Feiyang Chemical Co., Ltd. | China national standards | MT | 987.06 | USD | 20251023 |