| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.88 | USD | 20251126 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.69 | USD | 20251125 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.56 | USD | 20251124 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.39 | USD | 20251123 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.39 | USD | 20251121 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.2 | USD | 20251120 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.41 | USD | 20251119 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.51 | USD | 20251118 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.75 | USD | 20251117 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 437.7 | USD | 20251116 |