| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1255.79 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.3 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.81 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1065.54 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1066.14 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 974.36 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 974.23 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1066.01 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1066.01 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 974.23 | USD | 20251114 |