| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1125.35 | USD | 20250929 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1111.28 | USD | 20250929 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1110.3 | USD | 20250928 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250928 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250927 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1110.3 | USD | 20250927 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1110.3 | USD | 20250926 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1124.35 | USD | 20250926 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1125.86 | USD | 20250925 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1111.78 | USD | 20250925 |