| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.45 | USD | 20251026 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.45 | USD | 20251024 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.48 | USD | 20251023 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.36 | USD | 20251022 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.44 | USD | 20251021 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 235.3 | USD | 20251020 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 239.61 | USD | 20251018 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 239.61 | USD | 20251017 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 239.54 | USD | 20251016 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 239.45 | USD | 20251015 |