| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1201.18 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1179.98 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1215.31 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1215.31 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.74 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.99 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1180.23 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1215.56 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1201.43 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1215.56 | USD | 20251205 |