L18″ × W24″ L8′ × W4′ L18″ × W28″ L12″ × W24″ 4mm, 750gsm for yard signs
1.Extrusion of corrugated polypropylene sheet 2.Edge and corner sealing of corrugated PP sheet 3.Ultrasonic welding 4.Creasing 5.Folding,gluing 6.Die-cutting & slitting of plastic sheet products 7.Screen printing
