| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Chuangxin Chemical Co., Ltd. | China national standards | MT | 159.5 | USD | 20251124 |
| Shandong Chuangxin Chemical Co., Ltd. | China national standards | MT | 154.94 | USD | 20251015 |
| Shandong Chuangxin Chemical Co., Ltd. | China national standards | MT | 154.91 | USD | 20251013 |
| Shandong Chuangxin Chemical Co., Ltd. | China national standards | MT | 154.6 | USD | 20250928 |