| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 946.88 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 945.59 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 945.92 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.36 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 910.73 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 910.73 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 910.73 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.17 | USD | 20250814 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.0 | USD | 20250813 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 910.13 | USD | 20250812 |