... materials as polyethylene, polypropylene plastic bag, glass paper and roll paper, etc. GY-TY Four-to-Eight Colour Flexible Letter ... for printing such packing materials as polyethylene, polypropylene plastic bag, glass paper and roll paper, etc. And it ... printing equipment for producing paper packing bag foe food, supermarket handbag, vest bag and clothes bag, etc. Characteristics:1. Easy operation ...