... -automatic plastic vacuum forming machine *AutomaticVacuumMachine *Vacuum Acrylic,ps,plastic *make light box ,LED letter semi-automatic plastic vacuum forming machine 1 ... the acrylic plate on top of the machine the mold, heating, softening, plastic, cooling, an automatic shape.B. Automatic ... . Pneumatic door of heating box, energy saving and high efficiency.6. 2 indivicual heating boxes, single work and ...