| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yuanhe Xinsheng Chemical Trade Co., Ltd. | China national standards | MT | 874.71 | USD | 20251027 |
| Shandong Yuanhe Xinsheng Chemical Trade Co., Ltd. | China national standards | MT | 873.81 | USD | 20251022 |
| Shandong Yuanhe Xinsheng Chemical Trade Co., Ltd. | China national standards | MT | 872.98 | USD | 20251014 |
| Shandong Yuanhe Xinsheng Chemical Trade Co., Ltd. | China national standards | MT | 872.54 | USD | 20250924 |
| Shandong Yuanhe Xinsheng Chemical Trade Co., Ltd. | China national standards | MT | 872.54 | USD | 20250923 |