... vulvitis, cervicitis, and other gynecological diseases Before use GFV-400 Series Ozone gynecologic therapeutic equipment, be sure to read ... components. Divided into 3 models: GFV-400-1deskto, GFV-400-2 Portable, GFV-400-3TrolleyThe main technique parameters1. Supply voltage:AC ... in 1800-6400mg/h range.Method of use1. GFV-400 ozone gynecological instrument for microcomputer program chip set adjusting ...