1. factory direct of square cake card board 2. FDA test report 3. food grade ... :corrugated cardboared surface material: aluminum foil, PET metallized filmUsagefor cake, muffin, etcShaperound, square, rectangle, heart-shaped, scalloped, etcColorgolden, silver, red, blue, ... requirementCoatingone side Other material such as grayboard cardbord, MDF cake board can also be produced. Please feel free to ...