| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 352.47 | USD | 20251025 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.45 | USD | 20251025 |
| Henan Sendi EnvTech | China national standards | MT | 352.47 | USD | 20251024 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.45 | USD | 20251024 |
| Henan Sendi EnvTech | China national standards | MT | 352.47 | USD | 20251024 |
| Henan Sendi EnvTech | China national standards | MT | 352.52 | USD | 20251023 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.54 | USD | 20251023 |
| Henan Sendi EnvTech | China national standards | MT | 352.52 | USD | 20251023 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.21 | USD | 20251022 |
| Henan Sendi EnvTech | China national standards | MT | 352.34 | USD | 20251022 |