| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.64 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.74 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.77 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.32 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.3 | 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 | 386.45 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.37 | USD | 20250825 |