| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 806.0 | USD | 20251016 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.4 | USD | 20251014 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.55 | USD | 20251013 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.09 | USD | 20251012 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.09 | USD | 20251011 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.09 | USD | 20251010 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 808.7 | USD | 20251009 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.34 | USD | 20251008 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.34 | USD | 20251004 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 829.95 | USD | 20250929 |