| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1522.63 | USD | 20251021 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1522.63 | USD | 20251021 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1521.71 | USD | 20251020 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1521.71 | USD | 20251020 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1522.22 | USD | 20251017 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1522.22 | USD | 20251017 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1521.81 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1521.81 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1478.98 | USD | 20251015 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1478.98 | USD | 20251015 |