| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.5 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.6 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.82 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.71 | USD | 20251103 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.56 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.66 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.66 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.56 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.56 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.66 | USD | 20251031 |