| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.7 | USD | 20251011 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1068.89 | USD | 20251009 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.59 | USD | 20251008 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.59 | USD | 20251004 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.59 | USD | 20250930 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.08 | USD | 20250929 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1068.14 | USD | 20250928 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1068.14 | USD | 20250927 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1068.14 | USD | 20250926 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1069.56 | USD | 20250925 |