| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.84 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.72 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.84 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.96 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.2 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.09 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.74 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.85 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.41 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.3 | USD | 20251105 |