| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 866.1 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.02 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.76 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.84 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.42 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.25 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.32 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.83 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.75 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.36 | USD | 20250828 |