| Vendor | Spec | Unit | Price | Currency | Date |
| Binzhou Shengyuan Chemical Technology Co., Ltd. | China national standards | MT | 169.36 | USD | 20251028 |
| Binzhou Shengyuan Chemical Technology Co., Ltd. | China national standards | MT | 169.21 | USD | 20251023 |
| Binzhou Shengyuan Chemical Technology Co., Ltd. | China national standards | MT | 169.08 | USD | 20251020 |
| Binzhou Shengyuan Chemical Technology Co., Ltd. | China national standards | MT | 169.0 | USD | 20251013 |
| Binzhou Shengyuan Chemical Technology Co., Ltd. | China national standards | MT | 168.88 | USD | 20250923 |