| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.46 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.62 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.75 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.57 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.34 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.17 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.41 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.56 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.33 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.2 | USD | 20251105 |