| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1110.16 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1107.67 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1107.67 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1108.2 | USD | 20250821 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.69 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1107.08 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1107.65 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.89 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.89 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.89 | USD | 20250815 |