| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Qingmai Tech | 800 VOCs | MT | 1055.49 | USD | 20250924 |
| Henan Qingmai Tech | 800 VOCs | MT | 1055.49 | USD | 20250923 |
| Henan Qingmai Tech | China national standards | MT | 788.1 | USD | 20250923 |
| Henan Qingmai Tech | China national standards | MT | 787.56 | USD | 20250922 |
| Henan Qingmai Tech | 800 VOCs | MT | 1054.76 | USD | 20250922 |
| Henan Qingmai Tech | 800 VOCs | MT | 1054.44 | USD | 20250919 |
| Henan Qingmai Tech | China national standards | MT | 787.31 | USD | 20250919 |
| Henan Qingmai Tech | China national standards | MT | 787.79 | USD | 20250918 |
| Henan Qingmai Tech | 800 VOCs | MT | 1055.07 | USD | 20250918 |