| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.59 | USD | 20250925 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.59 | USD | 20250924 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.59 | USD | 20250923 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 689.11 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 688.9 | USD | 20250920 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 688.9 | USD | 20250919 |