| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.78 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.94 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.11 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.83 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.17 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.93 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.05 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.28 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.22 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.89 | USD | 20251106 |