| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Longmao Chem | China national standards | MT | 8744.32 | USD | 20260416 |
| Weifang Longmao Chem | China national standards | MT | USD | 20260413 | |
| Weifang Longmao Chem | China national standards | MT | USD | 20260113 | |
| Weifang Longmao Chem | China national standards | MT | USD | 20260105 | |
| Weifang Longmao Chem | Industrial Grade | MT | USD | 20251211 | |
| Weifang Longmao Chem | Industrial Grade | MT | USD | 20251210 | |
| Weifang Longmao Chem | Industrial Grade | MT | USD | 20251209 | |
| Weifang Longmao Chem | Industrial Grade | MT | USD | 20251208 | |
| Weifang Longmao Chem | Industrial Grade | MT | USD | 20251201 | |
| Weifang Longmao Chem | Industrial Grade | MT | USD | 20251128 |