| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.79 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.9 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.07 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.12 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.24 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.18 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.89 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.01 | USD | 20251029 |
| 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 |