| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.29 | USD | 20250923 |
| Henan Sendi EnvTech | China national standards | MT | 351.83 | USD | 20250923 |
| Henan Sendi EnvTech | China national standards | MT | 351.59 | USD | 20250922 |
| Henan Sendi EnvTech | China national standards | MT | 351.59 | USD | 20250922 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 632.86 | USD | 20250922 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 632.66 | USD | 20250920 |
| Henan Sendi EnvTech | China national standards | MT | 351.48 | USD | 20250920 |
| Henan Sendi EnvTech | China national standards | MT | 351.48 | USD | 20250920 |
| Henan Sendi EnvTech | China national standards | MT | 351.48 | USD | 20250919 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 632.66 | USD | 20250919 |