| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.79 | USD | 20251211 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.08 | USD | 20251210 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 748.87 | USD | 20251209 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 748.97 | USD | 20251208 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.13 | USD | 20251206 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.13 | USD | 20251205 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.3 | USD | 20251204 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.07 | USD | 20251203 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 748.65 | USD | 20251202 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 749.02 | USD | 20251201 |