... system. 2. reduce dust paticles flying Direct discharging vibrating screening machine:Equipment with the strict sealing and dust removal system, bag ... the working environment and transfer materials to the vibratory screening machine for screening or impurity removal effetively. Thus, the loss of materials is ... , 1500AYD-400, 600, 800, 1000, 1200, 1500 direct discharging sifting machine for bread flour