| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | 55% | MT | 626.84 | USD | 20250616 |
| Shandong Qiangsen Chemical Co., Ltd. | 40% | MT | 487.54 | USD | 20250616 |
| Shandong Qiangsen Chemical Co., Ltd. | 40% | MT | 486.88 | USD | 20250614 |
| Shandong Qiangsen Chemical Co., Ltd. | 55% | MT | 625.99 | USD | 20250614 |