| Vendor | Spec | Unit | Price | Currency | Date |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 886.64 | USD | 20251008 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1111.81 | USD | 20250930 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1097.74 | USD | 20250930 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 928.86 | USD | 20250930 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 886.64 | USD | 20250930 |
| Wengfu (GROUP) Co., Ltd. | Industrial Grade;优等级 | MT | 1055.02 | USD | 20250929 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 928.41 | USD | 20250929 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 886.21 | USD | 20250929 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 927.59 | USD | 20250927 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 927.59 | USD | 20250926 |