| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.02 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.96 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.17 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.15 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.07 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.03 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.81 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.89 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.56 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 634.45 | USD | 20251024 |