| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.74 | USD | 20251013 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.37 | USD | 20251011 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.37 | USD | 20251011 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.37 | USD | 20251010 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.37 | USD | 20251010 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 632.89 | USD | 20251009 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 632.89 | USD | 20251009 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.31 | USD | 20250930 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.31 | USD | 20250930 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.01 | USD | 20250929 |