| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1089.22 | USD | 20250926 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1090.67 | USD | 20250925 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1090.67 | USD | 20250924 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1090.67 | USD | 20250923 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1089.92 | USD | 20250922 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1089.58 | USD | 20250919 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 1090.24 | USD | 20250918 |