| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongxin CHEMICALS Co., Ltd. | China national standards | MT | 886.26 | USD | 20250918 |
| Shandong Hongxin CHEMICALS Co., Ltd. | China national standards | MT | 914.4 | USD | 20250918 |
| Shandong Hongxin CHEMICALS Co., Ltd. | China national standards | MT | 928.47 | USD | 20250918 |
| Shandong Hongxin CHEMICALS Co., Ltd. | China national standards | MT | 928.47 | USD | 20250918 |