| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.21 | USD | 20250902 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.32 | USD | 20250901 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.59 | USD | 20250831 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.59 | USD | 20250830 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.59 | USD | 20250829 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.38 | USD | 20250828 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.08 | USD | 20250827 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 463.56 | USD | 20250826 |