| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.39 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.39 | USD | 20250830 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.39 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.39 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.25 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.25 | USD | 20250828 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.07 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.07 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.76 | USD | 20250826 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 283.76 | USD | 20250826 |