| Vendor | Spec | Unit | Price | Currency | Date |
| Baozhen Shandong Chem | China national standards | MT | 1413.15 | USD | 20251208 |
| Baozhen Shandong Chem | China national standards | MT | 1413.15 | USD | 20251208 |
| Baozhen Shandong Chem | China national standards | MT | 1413.77 | USD | 20251204 |
| Baozhen Shandong Chem | China national standards | MT | 1413.77 | USD | 20251204 |
| Baozhen Shandong Chem | China national standards | MT | 1413.25 | USD | 20251201 |
| Baozhen Shandong Chem | China national standards | MT | 1413.25 | USD | 20251201 |
| Baozhen Shandong Chem | China national standards | MT | 1412.65 | USD | 20251128 |
| Baozhen Shandong Chem | China national standards | MT | 1412.65 | USD | 20251128 |
| Baozhen Shandong Chem | China national standards | MT | 1412.51 | USD | 20251126 |
| Baozhen Shandong Chem | China national standards | MT | 1412.51 | USD | 20251126 |