| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hanyue Chemical Co., Ltd. | China national standards | MT | 190.33 | USD | 20251024 |
| Shandong Hanyue Chemical Co., Ltd. | China national standards | MT | 190.36 | USD | 20251023 |
| Shandong Hanyue Chemical Co., Ltd. | China national standards | MT | 190.26 | USD | 20251022 |
| Shandong Hanyue Chemical Co., Ltd. | China national standards | MT | 190.33 | USD | 20251021 |
| Shandong Hanyue Chemical Co., Ltd. | China national standards | MT | 190.01 | USD | 20251011 |
| Shandong Hanyue Chemical Co., Ltd. | China national standards | MT | 189.73 | USD | 20250928 |