| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 352.34 | USD | 20251022 |
| Henan Sendi EnvTech | China national standards | MT | 352.46 | USD | 20251021 |
| Henan Sendi EnvTech | China national standards | MT | 352.46 | USD | 20251021 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.43 | USD | 20251021 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.04 | USD | 20251020 |
| Henan Sendi EnvTech | China national standards | MT | 352.25 | USD | 20251020 |
| Henan Sendi EnvTech | China national standards | MT | 352.25 | USD | 20251020 |
| Henan Sendi EnvTech | China national standards | MT | 352.37 | USD | 20251018 |
| Henan Sendi EnvTech | China national standards | MT | 352.37 | USD | 20251018 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.26 | USD | 20251018 |