| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | 37% | MT | 141.85 | USD | 20250529 |
| Huainan Guoke Ruida Chemical Product Sales Co., Ltd. | 37% | MT | 166.91 | USD | 20250528 |
| Shandong Qiangsen Chemical Co., Ltd. | 37% | MT | 141.88 | USD | 20250528 |
| Huainan Guoke Ruida Chemical Product Sales Co., Ltd. | 37% | MT | 166.95 | USD | 20250527 |
| Shandong Qiangsen Chemical Co., Ltd. | 37% | MT | 141.91 | USD | 20250527 |
| Shandong Qiangsen Chemical Co., Ltd. | 37% | MT | 142.0 | USD | 20250526 |
| Huainan Guoke Ruida Chemical Product Sales Co., Ltd. | 37% | MT | 167.05 | USD | 20250526 |
| Huainan Guoke Ruida Chemical Product Sales Co., Ltd. | 37% | MT | 166.85 | USD | 20250525 |
| Shandong Qiangsen Chemical Co., Ltd. | 37% | MT | 141.83 | USD | 20250524 |
| Huainan Guoke Ruida Chemical Product Sales Co., Ltd. | 37% | MT | 166.85 | USD | 20250524 |