| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1240.69 | USD | 20251026 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.48 | USD | 20251025 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.48 | USD | 20251025 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 324.27 | USD | 20251025 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.47 | USD | 20251025 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.45 | USD | 20251025 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.48 | USD | 20251025 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.47 | USD | 20251024 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.48 | USD | 20251024 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 324.27 | USD | 20251024 |