| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.3 | USD | 20250522 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.61 | USD | 20250521 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.73 | USD | 20250520 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1460.04 | USD | 20250519 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.59 | USD | 20250516 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.08 | USD | 20250515 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1459.23 | USD | 20250514 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1458.52 | USD | 20250513 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1458.52 | USD | 20250513 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1457.0 | USD | 20250512 |