| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.37 | USD | 20251013 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.14 | USD | 20251012 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.14 | USD | 20251010 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 400.83 | USD | 20251009 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.1 | USD | 20250930 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 400.91 | USD | 20250929 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 400.55 | USD | 20250927 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 400.55 | USD | 20250926 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 400.55 | USD | 20250926 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.09 | USD | 20250925 |