foot suction apparatus long life High Quality Operate without power Easy Operate FEATURES:1,Foot operated suction pump from base sheet iron and foot ... of arriving,the number of times stepped to move:≤12,Pedal pressure:≤245N;3,Normal foot work,the discharge is in ... °C,Relative humidity:≤80%(25°C),Atmospheric pressure:86KPa~106KPa pedal scution machine