| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.14 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 869.27 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.33 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 869.47 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.08 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 869.21 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.59 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.72 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.01 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 869.15 | USD | 20251201 |