| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 802.48 | USD | 20250829 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 802.11 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 802.11 | USD | 20250828 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 801.6 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 801.6 | USD | 20250827 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 800.7 | USD | 20250826 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 800.7 | USD | 20250826 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 801.0 | USD | 20250825 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 801.0 | USD | 20250825 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 799.2 | USD | 20250823 |