| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai | China national standards | MT | 211.11 | USD | 20250904 |
| Henan Huiyihai | 300 VOCs | MT | 211.0 | USD | 20250902 |
| Henan Huiyihai | 300 VOCs | MT | 323.54 | USD | 20250902 |
| Henan Huiyihai | China national standards | MT | 211.0 | USD | 20250902 |
| Henan Huiyihai | China national standards | MT | 211.05 | USD | 20250901 |
| Henan Huiyihai | 300 VOCs | MT | 323.62 | USD | 20250901 |
| Henan Huiyihai | 300 VOCs | MT | 211.05 | USD | 20250901 |
| Henan Huiyihai | 300 VOCs | MT | 211.18 | USD | 20250831 |
| Henan Huiyihai | 300 VOCs | MT | 323.81 | USD | 20250831 |
| Henan Huiyihai | China national standards | MT | 211.18 | USD | 20250831 |