| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 323.46 | USD | 20250922 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 210.95 | USD | 20250922 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 210.95 | USD | 20250922 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 787.56 | USD | 20250922 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1054.76 | USD | 20250922 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 351.59 | USD | 20250922 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 632.86 | USD | 20250922 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 351.59 | USD | 20250922 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 506.29 | USD | 20250922 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 506.29 | USD | 20250922 |