| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.16 | USD | 20250708 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.65 | USD | 20250707 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.15 | USD | 20250705 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.15 | USD | 20250704 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.35 | USD | 20250703 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1243.95 | USD | 20250702 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1244.16 | USD | 20250701 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1243.26 | USD | 20250630 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1242.55 | USD | 20250628 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1242.55 | USD | 20250627 |