| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.43 | USD | 20250815 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.69 | USD | 20250814 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.69 | USD | 20250814 |