| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1238.48 | USD | 20251002 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1238.48 | USD | 20251001 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.1 | USD | 20251001 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 788.12 | USD | 20250930 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.1 | USD | 20250930 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 633.31 | USD | 20250930 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 351.84 | USD | 20250930 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 534.8 | USD | 20250930 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 506.65 | USD | 20250930 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 506.65 | USD | 20250930 |