| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1365.14 | USD | 20250930 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.73 | USD | 20250930 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1364.49 | USD | 20250929 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.12 | USD | 20250929 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1364.49 | USD | 20250929 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1285.98 | USD | 20250928 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1363.28 | USD | 20250928 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1363.28 | USD | 20250926 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1285.98 | USD | 20250926 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.7 | USD | 20250925 |