| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 353.34 | USD | 20251203 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.89 | USD | 20251202 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.76 | USD | 20251202 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 791.03 | USD | 20251202 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 635.65 | USD | 20251202 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1059.41 | USD | 20251202 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.77 | USD | 20251202 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 607.4 | USD | 20251202 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.88 | USD | 20251202 |