| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.82 | USD | 20251030 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.69 | USD | 20251025 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.69 | USD | 20251024 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.87 | USD | 20251023 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.66 | USD | 20251021 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1239.91 | USD | 20251020 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.33 | USD | 20251017 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.0 | USD | 20251016 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1240.0 | USD | 20251016 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1239.52 | USD | 20251015 |