| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 965.83 | USD | 20250730 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 964.89 | USD | 20250729 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 965.48 | USD | 20250728 |