Trolley structure and it can be applied in the internal organs of the abdomen and in the gynecology and obstetrics diagnosis. Technical Parameters:Structure: portable and trolley, KJ-4001, 4002, 4003 and 4003(workstation)Display mode: Convex array: B, B/B,4B, B+M, and MMagnification: ×0.8, ×1.0, ×1.2, × 1.5, ×1.8(Depth hoist display), ×2.0 (Depth hoist display)Dynamic range: 64~96dB adjustable. ...