| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1242.67 | USD | 20250626 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1241.84 | USD | 20250625 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1242.05 | USD | 20250624 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1241.11 | USD | 20250623 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1241.37 | USD | 20250621 |