| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.5 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.21 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.39 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.54 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.54 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.72 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.54 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.54 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.84 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.35 | USD | 20251106 |