| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.59 | USD | 20250911 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.59 | USD | 20250911 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.59 | USD | 20250911 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.65 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.65 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.65 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.24 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.38 | USD | 20250904 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.38 | USD | 20250904 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 829.95 | USD | 20250902 |