| Vendor | Spec | Unit | Price | Currency | Date |
| Mingquan | China national standards | MT | 312.81 | USD | 20251229 |
| Yankuang Yulin Chem | China national standards | MT | 265.78 | USD | 20251226 |
| Yankuang Yulin Chem | China national standards | MT | 265.78 | USD | 20251226 |
| Unknown | China national standards | MT | 620.0 | USD | 20210323 |
| Unknown | China national standards | MT | 50.0 | USD | 20210323 |
| Unknown | China national standards | MT | 50.0 | USD | 20210323 |
| Unknown | China national standards | MT | 50.0 | USD | 20210323 |
| Unknown | China national standards | MT | 1290.0 | USD | 20210323 |
| Unknown | China national standards | MT | 50.0 | USD | 20210322 |
| Unknown | China national standards | MT | 470.0 | USD | 20210322 |