| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | 85% | MT | 841.27 | USD | 20250823 |
| Shandong Qiangsen Chemical Co., Ltd. | 85% | MT | 841.27 | USD | 20250822 |
| Shandong Qiangsen Chemical Co., Ltd. | 85% | MT | 841.67 | USD | 20250821 |
| Shandong Qiangsen Chemical Co., Ltd. | 85% | MT | 840.52 | USD | 20250820 |
| Shandong Qiangsen Chemical Co., Ltd. | 85% | MT | 840.82 | USD | 20250819 |