| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.98 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1009.51 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.81 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.81 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.81 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1009.29 | USD | 20250814 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1009.11 | USD | 20250813 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.15 | USD | 20250812 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.33 | USD | 20250811 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1008.66 | USD | 20250808 |