| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 823.2 | USD | 20250905 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 830.14 | USD | 20250901 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 865.83 | USD | 20250831 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 865.83 | USD | 20250830 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 865.83 | USD | 20250829 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 865.43 | USD | 20250828 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 864.88 | USD | 20250827 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 863.91 | USD | 20250826 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 801.0 | USD | 20250825 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 799.2 | USD | 20250824 |