| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251129 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.85 | USD | 20251128 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.99 | USD | 20251127 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.76 | USD | 20251126 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.76 | USD | 20251126 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.34 | USD | 20251125 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 988.04 | USD | 20251124 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 987.65 | USD | 20251122 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 987.65 | USD | 20251121 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 987.65 | USD | 20251121 |