| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.94 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.17 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.81 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.03 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.7 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.97 | USD | 20251027 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.57 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.47 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.72 | USD | 20251024 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.77 | USD | 20251024 |