| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1055.51 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1139.95 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1056.06 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1140.54 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1056.22 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1140.72 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1140.38 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1055.91 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1139.82 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1055.39 | USD | 20250905 |