| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.86 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.75 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.12 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.0 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.84 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.96 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.65 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.54 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.08 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.98 | USD | 20251024 |