| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 255.96 | USD | 20250922 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 255.88 | USD | 20250920 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 255.88 | USD | 20250920 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 255.88 | USD | 20250919 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 255.88 | USD | 20250919 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 256.03 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 256.03 | USD | 20250918 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.46 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.46 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 260.36 | USD | 20250915 |