| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 353.68 | USD | 20251211 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 636.62 | USD | 20251211 |
| Henan Sendi EnvTech | China national standards | MT | 353.68 | USD | 20251211 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 636.02 | USD | 20251210 |
| Henan Sendi EnvTech | China national standards | MT | 353.34 | USD | 20251210 |
| Henan Sendi EnvTech | China national standards | MT | 353.34 | USD | 20251210 |
| Henan Sendi EnvTech | China national standards | MT | 353.24 | USD | 20251209 |
| Henan Sendi EnvTech | China national standards | MT | 353.24 | USD | 20251209 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 635.84 | USD | 20251209 |
| Henan Sendi EnvTech | China national standards | MT | 353.36 | USD | 20251206 |