| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.19 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.19 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.54 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1011.41 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1011.41 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1011.41 | USD | 20250826 |