| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1075.18 | USD | 20251211 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1074.16 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1073.86 | USD | 20251209 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1073.99 | USD | 20251208 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1074.22 | USD | 20251207 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1074.22 | USD | 20251206 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1074.22 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1074.46 | USD | 20251204 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1074.14 | USD | 20251203 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1073.54 | USD | 20251202 |