| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.98 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.18 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.06 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.02 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.1 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.26 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.22 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.28 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.32 | USD | 20250909 |