| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.72 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 343.68 | USD | 20250821 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 343.21 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 329.21 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 364.23 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 378.24 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 350.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.22 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 357.22 | USD | 20250820 |