What's the name of the rectangular ceramic plate cover?

A rectangular plate cover. Rectangular ceramic plate cover is usually called "rectangular plate cover", "ceramic plate cover" or "porcelain plate cover". Ceramic plate cover is a kind of vessel used to cover rectangular ceramic plates, which can keep food fresh and warm, and is easy to carry and store. In families, hotels, restaurants and other occasions, ceramic plate covers are often used to hold all kinds of dishes and food to ensure the quality and hygiene of food.