| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Jiaye Chemical Co., Ltd. | China national standards | MT | 508.17 | USD | 20251029 |
| Changzhou Jiaye Chemical Co., Ltd. | China national standards | MT | 507.54 | USD | 20251021 |
| Changzhou Jiaye Chemical Co., Ltd. | China national standards | MT | 506.99 | USD | 20251013 |