| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 843.81 | USD | 20250922 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 843.55 | USD | 20250919 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 844.06 | USD | 20250918 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 844.75 | USD | 20250916 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 844.4 | USD | 20250915 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 844.01 | USD | 20250902 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 842.84 | USD | 20250826 |