| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.58 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1196.69 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.35 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.77 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.77 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.18 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.18 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1196.1 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.0 | USD | 20250906 |