... . Material: metal, or eco-friendly PVC, silicone, metal can be iron, stainless steel etc.3. Function: non-slip, keep paper stable ... Logo: can be any imprinting5. Color: PMS Pantone colors , or CMYK printing 6. Size: as request7. Attachment: any character8. ... hard enamel, imitation enamel, with epoxy10. Plating: nickel plating, or non-poisonous plating, silver plating11. Printing: can be offset printing, ...