| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 591.07 | USD | 20250923 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 632.86 | USD | 20250922 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 632.66 | USD | 20250919 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 633.04 | USD | 20250918 |