| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 720.45 | USD | 20251130 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 720.45 | USD | 20251129 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 720.45 | USD | 20251128 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 720.55 | USD | 20251127 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 822.72 | USD | 20250922 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 822.46 | USD | 20250921 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 822.46 | USD | 20250920 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 822.46 | USD | 20250919 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 822.96 | USD | 20250918 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 823.63 | USD | 20250916 |