... Tinplate. 3. 4PCS per set, in a nice tin box, 4.Food-grade 1. NameCork Coaster, Cork Cup ... 3. Suitble for promotion, advertising, and sales. It is welcomed by office, home, and bar. 4. Materials: High density ... cork, Tinplate. 5.4PCS per set, in a nice tin box, 6. ... Food-grade painting and coating. Cork Coaster / Cork Cup Mat ...