Trolley structure and it can be applied in the ... the gynecology and obstetrics diagnosis. Technical Parameters:Structure: portable and trolley, KJ-4001, 4002, 4003 and 4003(workstation)Display mode: ... polarity: left/right, black/white and up/down reverse.Part enlarge: 2 time of enlargements, Parts enlargement function: under ... intrauterine equipment, pregnancy and so on. KJ-4003 Trolley ultrasound