| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 670.37 | USD | 20251028 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 670.14 | USD | 20251027 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.69 | USD | 20251024 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.79 | USD | 20251023 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.45 | USD | 20251022 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.67 | USD | 20251021 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.27 | USD | 20251020 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.49 | USD | 20251017 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.32 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 669.06 | USD | 20251015 |