| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.67 | USD | 20251022 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.56 | USD | 20251020 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.7 | USD | 20251018 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.7 | USD | 20251017 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.59 | USD | 20251016 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 401.29 | USD | 20251014 |
| 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 |