| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1210.04 | USD | 20250901 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1210.76 | USD | 20250829 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1210.19 | USD | 20250828 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1209.43 | USD | 20250827 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1208.07 | USD | 20250826 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1208.53 | USD | 20250825 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1205.82 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1205.82 | USD | 20250822 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1206.39 | USD | 20250821 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1204.75 | USD | 20250820 |