| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi EnvTech | China national standards | MT | 352.77 | USD | 20251103 |
| Henan Sendi EnvTech | China national standards | MT | 352.71 | USD | 20251101 |
| Henan Sendi EnvTech | China national standards | MT | 352.71 | USD | 20251101 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.88 | USD | 20251101 |
| Henan Sendi EnvTech | China national standards | MT | 352.71 | USD | 20251031 |
| Henan Sendi EnvTech | China national standards | MT | 352.71 | USD | 20251031 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 634.88 | USD | 20251031 |
| Henan Sendi EnvTech | China national standards | MT | 352.79 | USD | 20251030 |
| Henan Sendi EnvTech | China national standards | MT | 352.79 | USD | 20251030 |
| Henan Sendi EnvTech | 1000 VOCs | MT | 635.02 | USD | 20251030 |