(1) Straight rotor type non-bonding material cavity, can do unobstructed, efficient and time-saving discharging;

(2) Four elastic compensation compaction,and the sealing effect of that is good , also there is less dust beside the machine, and the wearing parts is long life ;

(3) Low pressure high speed vortex air conveying is adopted to overcome the problems of sticking, blocking and pulse breaking in material transportation, also the material flow is uniform and continuously stable;

(4) A new type of nozzle and a material discharging elbow device can improve the spraying effect, which have less rebound and have high quality of spraying layer.