We are engaged on research, manufacture, distribution on robotics household appliance. the introduction in brief in washing machine:While oscillating in the water, the Ultrasonic emits the ultrasonic-wave which has an efficient osmosis. The Ultrasonic can separate the corpuscule of stain from the fabric, thus increasing the effect of washing. Different from the traditional washing, the Ultrasound also keep the clothes away from fading and gauffer by scrub. And the Nano which is one material in this Ultrasonic Device has an efficient sterilization.