| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 229.18 | USD | 20251211 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 228.97 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 228.9 | USD | 20251209 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 228.93 | USD | 20251208 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 233.22 | USD | 20251207 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 233.22 | USD | 20251206 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 233.22 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 233.27 | USD | 20251204 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 233.2 | USD | 20251203 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 233.07 | USD | 20251202 |