| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.53 | USD | 20251028 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.46 | USD | 20251027 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.33 | USD | 20251024 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.36 | USD | 20251023 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.26 | USD | 20251022 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.33 | USD | 20251021 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.21 | USD | 20251020 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.28 | USD | 20251017 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.23 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 190.15 | USD | 20251015 |