| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 323.46 | USD | 20250922 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 306.58 | USD | 20250922 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 306.49 | USD | 20250919 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 323.36 | USD | 20250919 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 323.56 | USD | 20250918 |
| Shanghai SKY Chem Industrial Co., Ltd. | China national standards | MT | 306.68 | USD | 20250918 |