| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1407.2 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1407.2 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1407.2 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1406.31 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1406.31 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1404.73 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1404.73 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1405.26 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1405.26 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1405.26 | USD | 20250825 |