| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250608 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250607 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250606 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250605 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.96 | USD | 20250604 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1099.22 | USD | 20250603 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1099.54 | USD | 20250602 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1099.54 | USD | 20250531 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1099.54 | USD | 20250530 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1098.64 | USD | 20250529 |