Product Introduction This PET round cake box from Rosinpack consists of a heavy‑duty black base and high‑clear ribbed dome lid. Vertical reinforcing ribs on the dome lid and circular reinforced structure on black base greatly improve compression resistance. As a thermoforming blister manufacturer, Rosinpack delivers full‑in‑house service including mold design, sheet selection, deep‑draw thermoforming and mass production. Multiple inch‑size options from 6‑12 inch are available