| Vendor | Spec | Unit | Price | Currency | Date |
|---|---|---|---|---|---|
| Shandong Qiangsen Chem | China national standards | MT | USD | 20250708 | |
| Shandong Qiangsen Chem | China national standards | MT | USD | 20250707 | |
| Shandong Qiangsen Chem | China national standards | MT | USD | 20250705 | |
| Shandong Qiangsen Chem | China national standards | MT | USD | 20250704 |