| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250610 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250609 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250607 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250606 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250605 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.07 | USD | 20250604 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.36 | USD | 20250603 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1238.73 | USD | 20250530 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1237.71 | USD | 20250529 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1237.93 | USD | 20250528 |