| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1048.9 | USD | 20250916 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1048.47 | USD | 20250915 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1047.98 | USD | 20250902 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 1046.52 | USD | 20250826 |