| Vendor | Spec | Unit | Price | Currency | Date |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1114.56 | USD | 20251031 |
| Wengfu (GROUP) Co., Ltd. | Industrial Grade;优等级 | MT | 1051.07 | USD | 20251031 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 874.72 | USD | 20251031 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1114.81 | USD | 20251030 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 1128.92 | USD | 20251030 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 874.92 | USD | 20251030 |
| Wengfu (GROUP) Co., Ltd. | Industrial Grade;优等级 | MT | 1051.31 | USD | 20251030 |
| Wengfu (GROUP) Co., Ltd. | Industrial Grade;优等级 | MT | 1051.62 | USD | 20251029 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 875.17 | USD | 20251029 |
| Wengfu (GROUP) Co., Ltd. | 85% | MT | 875.01 | USD | 20251028 |