| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1405.26 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.11 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.11 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.11 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.11 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.78 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1402.78 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1400.87 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1400.87 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1401.36 | USD | 20250819 |