1,Efficient and reliable, 2,high vacuum degree, strong suction 3,Long life-time. Tough,Reliable 4,Long life-time, ... and other dry and wet particles, which mainly consists of vacuum generator, suction tank and filter. It is easy to use and ... wet and dry material.Features:Efficient and reliable, high vacuum degree, strong suction.No movable parts, No Electric , safety for any situation ...