| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 353.34 | USD | 20251210 |
| Henan Leavit Chem | 700 VOCs | MT | 537.08 | USD | 20251210 |
| Henan Huiyi | China national standards | MT | 212.01 | USD | 20251210 |
| Henan Huiyihai | 300 VOCs | MT | 325.07 | USD | 20251210 |
| Henan Leavit Chem | 400 VOCs | MT | 508.81 | USD | 20251210 |
| Henan Qingmai Tech | China national standards | MT | 791.49 | USD | 20251210 |
| Henan Qingmai Tech | 800 VOCs | MT | 1060.03 | USD | 20251210 |
| Henan Huiyihai | 300 VOCs | MT | 212.01 | USD | 20251210 |
| Henan Kaijie Water | 1000 VOCs | MT | 1243.76 | USD | 20251210 |
| Henan Shunzhibang | China national standards | MT | 777.35 | USD | 20251210 |