| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.01 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.65 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.54 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1237.28 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.78 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1235.03 | USD | 20250801 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1235.07 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1235.98 | USD | 20250730 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1234.78 | USD | 20250729 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1235.54 | USD | 20250728 |