| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.85 | USD | 20251130 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.85 | USD | 20251129 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.85 | USD | 20251128 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.89 | USD | 20251127 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.81 | USD | 20251126 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.68 | USD | 20251125 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.59 | USD | 20251124 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.46 | USD | 20251123 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.46 | USD | 20251121 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 317.33 | USD | 20251120 |