| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 506.53 | USD | 20250901 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 506.83 | USD | 20250829 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 506.59 | USD | 20250828 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 506.27 | USD | 20250827 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 505.7 | USD | 20250826 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 505.9 | USD | 20250825 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 504.76 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 504.76 | USD | 20250822 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 505.0 | USD | 20250821 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 504.31 | USD | 20250820 |