| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.93 | USD | 20251028 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1862.28 | USD | 20251027 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1861.04 | USD | 20251024 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1861.3 | USD | 20251023 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1860.36 | USD | 20251022 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1860.99 | USD | 20251021 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1859.86 | USD | 20251020 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1860.49 | USD | 20251017 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1859.99 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1859.29 | USD | 20251015 |