... 3.Convex surface of the gap : aa 7mm FeatureApplicable objects: business cards , photos , clothing , apparel , CD-ROMs , books, couplet , ... any three-dimensional object direct print.Such as: light T-shirt, leather, wood, crystal, acrylic, plastic, glass, U ... industry* digital printing machine print personalized: such as T - shirt, pillow (sets), gloves, handkerchiefs and other color printing services ...