| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.17 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 866.26 | USD | 20251015 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.94 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.86 | USD | 20251014 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 852.03 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 866.11 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.61 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.54 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.54 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.61 | USD | 20251010 |