... . Easy operation. 4. Save electricity.Feature:1. The full set machine is made of twosets main motors, two cylinders and one ... the best hardness and corrosion resistance.,Scientifically designed,this machine set has two heads for one extruder with such advantages ... production capacity,saving energy,labour and workshop area,etc.use:This machine set is used for blowing Low-density polyethylene(LDPE)and ...