| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | 1000 VOCs | MT | 635.21 | USD | 20251029 |
| Henan Sendi EnvTech | China national standards | MT | 352.89 | USD | 20251029 |
| Henan Sendi EnvTech | China national standards | MT | 352.89 | USD | 20251029 |
| Henan Sendi EnvTech | China national standards | MT | 352.83 | USD | 20251028 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 635.09 | USD | 20251028 |
| Henan Sendi EnvTech | China national standards | MT | 352.83 | USD | 20251028 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.87 | USD | 20251027 |
| Henan Sendi EnvTech | China national standards | MT | 352.7 | USD | 20251027 |
| Henan Sendi EnvTech | China national standards | MT | 352.7 | USD | 20251027 |
| Henan Sendi EnvTech | China national standards | MT | 352.47 | USD | 20251025 |