| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongshuo Chemical Technology Co., Ltd. | China national standards | MT | 506.29 | USD | 20250922 |
| Shandong Hongshuo Chemical Technology Co., Ltd. | China national standards | MT | 506.13 | USD | 20250920 |
| Shandong Hongshuo Chemical Technology Co., Ltd. | China national standards | MT | 506.13 | USD | 20250919 |
| Shandong Hongshuo Chemical Technology Co., Ltd. | China national standards | MT | 506.13 | USD | 20250919 |
| Shandong Hongshuo Chemical Technology Co., Ltd. | China national standards | MT | 506.44 | USD | 20250918 |