| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 351.36 | USD | 20250926 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 632.45 | USD | 20250926 |
| Henan Sendi EnvTech | China national standards | MT | 351.36 | USD | 20250926 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.29 | USD | 20250925 |
| Henan Sendi EnvTech | China national standards | MT | 351.83 | USD | 20250925 |
| Henan Sendi EnvTech | China national standards | MT | 351.83 | USD | 20250925 |
| Henan Sendi EnvTech | China national standards | MT | 351.83 | USD | 20250924 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.29 | USD | 20250924 |
| Henan Sendi EnvTech | China national standards | MT | 351.83 | USD | 20250924 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.29 | USD | 20250923 |