| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.65 | USD | 20250605 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.65 | USD | 20250604 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.99 | USD | 20250603 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1461.42 | USD | 20250530 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.22 | USD | 20250529 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.48 | USD | 20250528 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.85 | USD | 20250527 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1461.72 | USD | 20250526 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.98 | USD | 20250524 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.98 | USD | 20250523 |