| Vendor | Spec | Unit | Price | Currency | Date |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2198.17 | USD | 20251016 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2196.53 | USD | 20251014 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2196.97 | USD | 20251013 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2195.7 | USD | 20251012 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2195.7 | USD | 20251010 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2194.03 | USD | 20251009 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2195.48 | USD | 20250930 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2194.43 | USD | 20250929 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250927 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 2192.49 | USD | 20250926 |