| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 438.14 | USD | 20251210 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 438.02 | USD | 20251209 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 438.17 | USD | 20251205 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 438.27 | USD | 20251204 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 437.89 | USD | 20251202 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 437.92 | USD | 20251129 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 437.92 | USD | 20251128 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 437.88 | USD | 20251126 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 437.56 | USD | 20251124 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 437.39 | USD | 20251122 |