... HZ, <100 W. 3. Main composition: dc servo motor, dc servo drive, the encoder, the rotary motion device, ... dc servo motor, understand and application of dc servo drive, dc servo manual control experiment, dc servo typical speed closed-loop control application experiment, dc servo system PC control experiment, dc servo motor ... China. 1.Good quality 2.Reasonable price 3.OEM Service4.OHSMS 28001;ISO14001; ...