| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 540.82 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 540.82 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.03 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.03 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.03 | USD | 20250825 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.81 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.81 | USD | 20250823 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.81 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.81 | USD | 20250822 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 539.81 | USD | 20250822 |