| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.56 | USD | 20250721 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.93 | USD | 20250720 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.93 | USD | 20250719 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.93 | USD | 20250718 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.5 | USD | 20250717 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.49 | USD | 20250716 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.93 | USD | 20250715 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.03 | USD | 20250714 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.28 | USD | 20250713 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.28 | USD | 20250712 |