| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1478.44 | USD | 20251014 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1478.44 | USD | 20251014 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1478.73 | USD | 20251013 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1478.73 | USD | 20251013 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1477.87 | USD | 20251011 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1477.87 | USD | 20251011 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1323.05 | USD | 20251010 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1323.05 | USD | 20251010 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1251.72 | USD | 20251009 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1251.72 | USD | 20251009 |