| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 767.01 | USD | 20251005 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 767.01 | USD | 20251003 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 767.01 | USD | 20251001 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 767.01 | USD | 20250930 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 766.64 | USD | 20250929 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 765.97 | USD | 20250927 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 765.97 | USD | 20250926 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 774.03 | USD | 20250925 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 774.03 | USD | 20250924 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 774.03 | USD | 20250923 |