| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.34 | USD | 20250904 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.81 | USD | 20250902 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.06 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250831 |