| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.61 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.61 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.21 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.28 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.21 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.18 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.23 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.11 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.42 | USD | 20250825 |