| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.82 | USD | 20251129 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.82 | USD | 20251128 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.91 | USD | 20251127 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.75 | USD | 20251126 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.48 | USD | 20251125 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.29 | USD | 20251124 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.03 | USD | 20251123 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.03 | USD | 20251122 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 649.03 | USD | 20251121 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 648.76 | USD | 20251120 |