| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1070.14 | USD | 20250913 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1070.14 | USD | 20250912 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.91 | USD | 20250911 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.49 | USD | 20250910 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1070.3 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.99 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.46 | USD | 20250907 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.46 | USD | 20250906 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.46 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.64 | USD | 20250904 |