| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1191.16 | USD | 20250819 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1191.78 | USD | 20250818 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1190.96 | USD | 20250815 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1191.53 | USD | 20250814 |