| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 352.01 | USD | 20251014 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.62 | USD | 20251014 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.74 | USD | 20251013 |
| Henan Sendi EnvTech | China national standards | MT | 352.08 | USD | 20251013 |
| Henan Sendi EnvTech | China national standards | MT | 352.08 | USD | 20251013 |
| Henan Sendi EnvTech | China national standards | MT | 351.87 | USD | 20251012 |
| Henan Sendi EnvTech | China national standards | MT | 351.87 | USD | 20251012 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.37 | USD | 20251012 |
| Henan Sendi EnvTech | China national standards | MT | 351.87 | USD | 20251011 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.37 | USD | 20251011 |