| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 791.49 | USD | 20250820 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 791.77 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 791.77 | USD | 20250819 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 820.22 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 820.22 | USD | 20250818 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250817 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250816 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.66 | USD | 20250815 |