Screw extrusion plastic blowing technology is used for this unit and fully automatic temperature control system is used to control the temperature ; the speed of the electric motor is adjusted in a stepless manner thus the rotation speed is stable with uniformed and smooth plastic pipe; further, its energy saving is also notable.  in this unit, the electric, pneumatic and mechanic parts are integrated bringing about stable performance and convenient operation;  it is an ideal re placement for the manually operated products.This unit is applicable for blowing the bottles of volume under 1000ml with the materials of PE and PP granules, which are formed after heating in one installment.