| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.97 | USD | 20250908 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250906 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250905 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.67 | USD | 20250902 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.96 | USD | 20250831 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.96 | USD | 20250830 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.96 | USD | 20250829 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.8 | USD | 20250828 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |