| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20251007 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20251006 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20251005 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20251003 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20251001 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.66 | USD | 20250930 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.5 | USD | 20250929 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.22 | USD | 20250927 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.22 | USD | 20250926 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 316.65 | USD | 20250925 |