| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.27 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 827.64 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 841.67 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 826.52 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 826.81 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 827.23 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 826.67 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 826.67 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 826.12 | USD | 20250812 |