| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.13 | USD | 20251017 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.04 | USD | 20251016 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.92 | USD | 20251015 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.81 | USD | 20251014 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.87 | USD | 20251013 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.69 | USD | 20251012 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.69 | USD | 20251011 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.69 | USD | 20251010 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.45 | USD | 20251009 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20251008 |