| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.82 | USD | 20251117 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 607.21 | USD | 20251117 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 423.63 | USD | 20251117 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 353.03 | USD | 20251117 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 324.79 | USD | 20251117 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.82 | USD | 20251117 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.79 | USD | 20251117 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.66 | USD | 20251117 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1242.66 | USD | 20251117 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1059.08 | USD | 20251117 |