| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1167.96 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.03 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.97 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.23 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1168.16 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.64 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1181.9 | USD | 20250901 |