| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 506.44 | USD | 20250918 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 534.57 | USD | 20250918 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.01 | USD | 20250918 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 323.56 | USD | 20250918 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 309.49 | USD | 20250918 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 604.91 | USD | 20250918 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 422.03 | USD | 20250918 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 787.79 | USD | 20250918 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1055.07 | USD | 20250918 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 633.04 | USD | 20250918 |