| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.96 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.42 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.12 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.35 | USD | 20250903 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.77 | USD | 20250903 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.05 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.61 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.85 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.3 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.93 | USD | 20250829 |