... 2,electric power 3,easy operation 4,ride on industrial vacuum cleaner WS-SD1250 Efficient use of external ... , does not produce harmful gases.3,With 48V power supply, high battery capacity4,Continuous working time :4-6 hours ... all mechanical components easy to disassemble.The parameters of industrial vacuum cleaner as belowNo.titleunitWS-SD12501Cleaning widthmm12502Working efficiencym2/h70003Climbing ...