| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | 1000 VOCs | MT | 635.36 | USD | 20251125 |
| Henan Sendi EnvTech | China national standards | MT | 352.98 | USD | 20251125 |
| Henan Sendi EnvTech | China national standards | MT | 352.87 | USD | 20251124 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 635.17 | USD | 20251124 |
| Henan Sendi EnvTech | China national standards | MT | 352.87 | USD | 20251124 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.92 | USD | 20251122 |
| Henan Sendi EnvTech | China national standards | MT | 352.73 | USD | 20251122 |
| Henan Sendi EnvTech | China national standards | MT | 352.73 | USD | 20251122 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.92 | USD | 20251121 |
| Henan Sendi EnvTech | China national standards | MT | 352.73 | USD | 20251121 |