| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 687.03 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.55 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.55 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.55 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.55 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.88 | USD | 20250814 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.76 | USD | 20250813 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.1 | USD | 20250812 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.23 | USD | 20250811 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 686.45 | USD | 20250808 |