| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chem | 128# | MT | 2021.12 | USD | 20251210 |
| Shandong Huize Chem | 128# | MT | 2020.8 | USD | 20251208 |
| Shandong Huize Chem | 128# | MT | 2019.95 | USD | 20251202 |
| Shandong Huize Chem | 128# | MT | 2019.95 | USD | 20251202 |
| Shandong Huize Chem | 128# | MT | 2020.09 | USD | 20251128 |
| Shandong Huize Chem | 128# | MT | 2017.92 | USD | 20251113 |
| Shandong Huize Chem | 128# | MT | 2017.89 | USD | 20251111 |
| Shandong Huize Chem | 128# | MT | 2016.41 | USD | 20251023 |
| Shandong Huize Chem | 128# | MT | 2014.23 | USD | 20251015 |
| Shandong Huize Chem | 128# | MT | 2011.2 | USD | 20251009 |