| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 541.83 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.11 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.11 | USD | 20250914 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.19 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.19 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.19 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.03 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.03 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.03 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 542.03 | USD | 20250908 |