| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 351.84 | USD | 20250930 |
| Henan Sendi EnvTech | China national standards | MT | 351.84 | USD | 20250930 |
| Henan Sendi EnvTech | China national standards | MT | 351.67 | USD | 20250929 |
| Henan Sendi EnvTech | China national standards | MT | 351.67 | USD | 20250929 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 633.01 | USD | 20250929 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 632.45 | USD | 20250928 |
| Henan Sendi EnvTech | China national standards | MT | 351.36 | USD | 20250928 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 632.45 | USD | 20250928 |
| Henan Sendi EnvTech | China national standards | MT | 351.36 | USD | 20250928 |
| Henan Sendi EnvTech | China national standards | MT | 351.36 | USD | 20250928 |