| Vendor | Spec | Unit | Price | Currency | Date |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1096.61 | USD | 20250919 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 928.47 | USD | 20250918 |
| Wengfu (GROUP) Co., Ltd. | Industrial Grade;优等级 | MT | 1055.07 | USD | 20250918 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1026.94 | USD | 20250918 |