| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.7 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.29 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.81 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.81 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.81 | USD | 20250912 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.97 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.67 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250907 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250906 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.17 | USD | 20250905 |