carton ,plastic or as your requirement Features: 1, no absorption of dust, no jams, effectively extending the service life; 2, the print is not curled;A2 engineering copy paper 1, no absorption of dust, no jams, effectively extending the service life;2, the print is not curled;3, the paper smooth and uniform, without paper, to meet the printing needs;4, paper clean, crisp and clear graphics;5, ...