| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1856.93 | USD | 20250918 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2194.56 | USD | 20250918 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2252.66 | USD | 20250916 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2251.75 | USD | 20250915 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2252.44 | USD | 20250911 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2251.55 | USD | 20250910 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2253.27 | USD | 20250909 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2252.6 | USD | 20250908 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2251.49 | USD | 20250905 |
| Yibin Tianyuan Group Co., Ltd. | China national standards | MT | 2251.87 | USD | 20250904 |