| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1098.17 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1112.25 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1112.25 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1105.21 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1126.33 | USD | 20250916 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1125.87 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.76 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1111.8 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1111.8 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.73 | USD | 20250915 |