| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.52 | USD | 20251202 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 791.03 | USD | 20251202 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 353.14 | USD | 20251202 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 508.52 | USD | 20251202 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.77 | USD | 20251202 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.88 | USD | 20251202 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1059.41 | USD | 20251202 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.88 | USD | 20251202 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.91 | USD | 20251201 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 537.03 | USD | 20251201 |