Paper trays are categorized into four main types: industrial paper trays, agricultural paper trays, food-grade paper trays, and medical product trays.

Industrial Paper Trays: Primarily used for the inner packaging of home appliances, mechanical accessories, electronic products, and lighting decorations.

2. Agricultural Paper Trays: Primarily used for fruits, poultry eggs, and agricultural nutrient pots.

3. Food Paper Trays: Primarily used for food bowls, basins, and supermarket food trays.

4. Medical Products: Primarily used in hospitals and battlefield frontlines, disposable medical items such as urine bottles and bed pans. Compared to plastic and stainless steel products, their advantage of being biodegradable into paper fibers that can be disposed of in the hospital's sewage system helps prevent cross-contamination of pathogens.