| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1103.47 | USD | 20251211 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1102.43 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1102.43 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1102.12 | USD | 20251209 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1102.26 | USD | 20251208 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1088.35 | USD | 20251207 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1088.35 | USD | 20251206 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1088.35 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1088.6 | USD | 20251204 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1088.28 | USD | 20251203 |