| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.96 | USD | 20250801 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.99 | USD | 20250731 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.81 | USD | 20250730 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1104.73 | USD | 20250729 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.41 | USD | 20250728 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.15 | USD | 20250727 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.15 | USD | 20250726 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.68 | USD | 20250724 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1106.23 | USD | 20250723 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1105.51 | USD | 20250722 |