| Negative ion concentration corresponding effect table |
| Anion concentrations of environmental place | Human health relationship degrees |
| Forest or Waterfalls: 10000-20000 pcs/cm3 | The human body has healed force |
| Mountain or seashore:5000-10000 pcs/cm3 | Sterilization, prevent disease |
| Country or field:1000-5000 pcs/cm3 | Enhance human immunity, antibacterial force |
| Wilderness or suburbs :100-1000 pcs/cm3 | Enhance human immunity, antibacterial force |
| Park:400-1000 pcs/cm3 | Enhance human immunity, antibacterial force |
| City Park:400-600 pcs/cm3 | To improve health |
| Street greening area:200-400 pcs/cm3 | Weak improve health |
| City room:100 pcs/cm3 | Induce physical barriers headaches and insomnia, etc |
| Building office: 40-50 pcs/cm3 | Induce physical barriers headaches and insomnia, etc |
| Industry Development zones: 0 pcs/cm3 | Easy Induce all kinds of disease |
Complaint
