... machine for acrylic *Automatic Vacuum Machine *Vacuum Acrylic,ps,plastic *make light box ,LED letter vacuum forming machine for ... acrylic 1.Do not have upper and lower die alignment, in- ... of the machine the mold, heating, softening, plastic, cooling, an automatic shape.B. Automatic control, ... no waste;E. Without mechanical indentation process, so that smooth transition edge products, ...