| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251012 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251011 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251011 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251010 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251010 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1054.82 | USD | 20251009 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20251008 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20251004 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.3 | USD | 20250930 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.81 | USD | 20250929 |