At present, the cleaning efficiency marked by most manufacturers is obtained by multiplying the width of the brush by the normal walking speed of 4.5-5 kilometers, that is, area = length * width, but in fact, the width of the brush does not represent the true cleaning width, especially for hand push Washing machine!
And because the cleaning area will overlap during the round-trip cleaning, cleaners will not use the machine at the normal walking speed except for the driving machine, and the speed of the equipment will slow down when turning, etc., all affect the cleaning efficiency of the machine.
