| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.54 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.07 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.57 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1063.1 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.37 | USD | 20250911 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.87 | USD | 20250911 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.72 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1063.26 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.95 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.96 | USD | 20250906 |