| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.36 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.09 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.09 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.13 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.13 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.13 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.13 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.13 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.13 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.8 | USD | 20250814 |