| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 924.64 | USD | 20251007 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 924.64 | USD | 20251006 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 924.64 | USD | 20251005 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 931.67 | USD | 20251003 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 931.67 | USD | 20251001 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 940.12 | USD | 20250930 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 945.29 | USD | 20250929 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 944.46 | USD | 20250928 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 944.46 | USD | 20250927 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 944.46 | USD | 20250926 |