| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 435.83 | USD | 20250920 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 435.83 | USD | 20250919 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 436.1 | USD | 20250918 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.61 | USD | 20250916 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.42 | USD | 20250915 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.74 | USD | 20250909 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.6 | USD | 20250908 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.37 | USD | 20250906 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.37 | USD | 20250905 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.21 | USD | 20250902 |