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After grid-shaped paper mounting and aluminum foil printing, the aluminum foil is cut into square blocks, which is mainly used for fast food restaurants to package various ready-to-heat and ready-to-eat foods, such as hamburgers, sandwiches, hot dogs, etc. The biggest advantage of mesh composite materials is that some air is stored in the grid between aluminum and paper, which expands after heating to play a role in heat insulation. At the same time, the paper layer absorbs moisture to keep the bread fresh. Food-grade aluminum foil has oil resistance, prevents grease from spilling, and keeps customers' hands clean.